Which of the following statements is not correct?

a. The number of movies you watched last year is an example of a continuous random variable

b. To study basic properties of discrete random variables, only the tools of discrete mathematics -summation and differences – are required.

c. The study of continuous random variables requires the continuous mathematics of the calculus, integrals, and derivatives.

d. In general, each outcome of an experiment can be associated with a number by specifying a degree of association.

What is the probability that two female students will be selected at random, one after the other, to participate in a research project from a class of 7 male and 3 female students?

a. 2/9

b. 1/10

c. 1/15

d. 3/10

In a two-tailed test, the level of significance is

a. Subtracted from 2

b. Divided by 2

c. Multiplied by 2

d. Added to 2

ANOVA F-test is said to be significant if

a. the alternative hypothesis of equality of treatment means is rejected based on the test criteria.

b. the null hypothesis of equality of treatment means is not rejected based on the test criteria.

c. the alternative hypothesis of equality of treatment means is not rejected based on the test criteria.

d. the null hypothesis of equality of treatment means is rejected based on the test criteria

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Acceptance region

b. Null hypothesis

c. Critical region

d. Alternative hypothesis

In hypotheses testing, the test value is obtained from

a. Test statistic

b. Hypotheses

c. Acceptance region

d. Critical region

The probability that Tope passes an exam is 1/3 and probabilities that his brother

and sister pass the same exam are 2/5 and 3/8 respectively. Find the probability that

the three of them will fail the exam.

a. 2/5

b. 1/4

c. 1/3

d. 3/8

There are basically two types of random variables; __________ and continuous random variables.

a. Exploratory

b. Independent

c. Discrete

d. Dependent

The closer the correlation coefficient is to zero, ___________ the degree of association between the variables under consideration

a. the clearer

b. the weaker

c. the stronger

d. the better

In regression analysis of the form as  Y = β 0 + β 1 x + E, the variable x is known as

a. Yield

b. Dependent

c. Treatment

d. Independent

Which type of sampling technique involves dividing the population into groups or clusters and then randomly selecting entire clusters to form the sample?

a. Cluster sampling

b. Stratified sampling

c. Convenience sampling

d.Systematic sampling

An index number is used to:

a. Track the changes in a group of related variables over time

b. Calculate the average of a set of numbers

c. Measure the price level of a specific commodity

d. Compare two different commodities in different units

A correlation coefficient of 0 indicates that there is:

a. A perfect negative relationship between the variables

b. No relationship between the variables

c. A weak positive relationship between the variables

d. A perfect positive relationship between the variables

What is the primary purpose of statistics in scientific research?

a. To make data more confusing

b. To prove a hypothesis

c. To summarize and analyze data

d. To create fancy charts and graphs

In hypothesis testing, what is the level of significance (alpha) commonly set at to test the null hypothesis?

a. 0.01

b. 0.05

c. 0.001

d.0.10

Which type of data is categorical and can be organized into groups or categories with no inherent order?

a. Nominal data

b. Interval data

c. Interval data

d. Ordinal data

Which type of sampling technique involves selecting every nth item from the population to form the sample?

a. Stratified sampling

b. Systematic sampling

c. Convenience sampling

d. Cluster sampling

Which type of sampling technique involves dividing the population into groups or clusters and then randomly selecting entire clusters to form the sample?

a. Cluster sampling

b. Stratified sampling

c. Convenience sampling

d. Systematic sampling

_________ measures the degree of relationship between two variables X and Y.

a. Correlation coefficient

b. Variance

c. Moment

d. Coefficient of variation

Which of the following statements is not an example of a continuous random variable?

a. The price for cheesecake in New York Style cheesecake

b. The weight gain in kilograms per month for a calf

c. The time it takes you to finish a statistics test

d. The number of mistakes made by a typist on a randomly chosen page of a manuscript

Which of the following is correct about the difference between a one-tailed test and a two-tailed test?

a. In a one-tailed test, the rejection region is always in the upper tails, while in a two-tailed test the rejection region is split between the tails.

b. In a one-tailed test, the rejection region is in one of the tails, while in a two-tailed test the rejection region is split between the tail

c. In a one-tailed test, the rejection region is always in the lower tails, while in a two-tailed test the rejection region is split between the tails.

d. In a two-tailed test, the rejection region is in one of the tails, while in a one-tailed test the rejection region is split between the tails.

Which of the following statement is true about the null hypothesis?

a. Can be estimated from the sample

b. Must not contain zero

c. it is an initial statement about the value of the parameter

d. Will always contain zero

The term ANOVA

a. has no special meaning

b. stands for Another Numeric Observation of the Variance

c. stands for Analysis of Variables

d. stands for Analysis of Variance

Three cards are drawn randomly from a deck of cards one after the other with replacement each time. Find the probability that the three cards are a 5, a heart and a king.

a. 1/67

b. 1/8

c. 1/52

d. 1/64

Which of the following statements is not an example of a discrete random variable?

a. The age of female respondents to a questionnaire about gender differences

b. The number of female respondents to a questionnaire about gender differences

c. The number of school-age children in a particular family

d. The number of sales a salesperson makes per year

Question text

Which of the following statements is not an example of a discrete random variable?

a. The age of female respondents to a questionnaire about gender differences

b. The number of female respondents to a questionnaire about gender differences

c. The number of school-age children in a particular family

d. The number of sales a salesperson makes per year

A statistic is to a sample as ___________ is to a population.

a. Estimate

b. Parameter

c. Average

d.Variance

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Critical region

b. Null hypothesis

c. Alternative hypothesis

d.Acceptance region

An index number is used to:

a. Measure the price level of a specific commodity

b. Calculate the average of a set of numbers

c. Track the changes in a group of related variables over time

d. Compare two different commodities in different units

Which level of measurement has a true zero point and allows for meaningful ratios between data points?

a. Ordinal

b. Nominal

c. Ratio

d. Interval

What is the primary purpose of statistics in scientific research?

a. To create fancy charts and graphs

b. To summarize and analyze data

c. To prove a hypothesis

d.To make data more confusing

In estimation theory, what is a point estimate?

a. A measure of the dispersion of the sample data

b. A single value that is used to approximate the population parameter

c. The average of the sample data

d. A range of values that likely contains the population parameter

In the chi-square test for goodness of fit, the null hypothesis assumes that:

a. There is no association between the variables being tested

b. The sample size is too small to draw any conclusions

c. The sample is normally distributed

d. There is an association between the variables being tested.

Which index number formula considers the expenditure shares of the base year while constructing the index?

a. Marshall-Edgeworth Price Index

b. Fisher Price Index

c. Paasche Price Index

d. Laspeyres Price Index

Goodness of fit is a statistical technique used to:

a. Determine if an observed frequency distribution fits an expected theoretical distribution

b. Compare the means of two or more groups

c. Measure the correlation between two variables

d. Assess the variability of a data set

Correlation is a statistical measure that describes the:

a. Difference between two variables

b. Causation between two variables

c. Strength and direction of the linear relationship between two variables

d. Proportion of variability explained by two variables

Which type of sampling technique involves selecting every nth item from the population to form the sample?

a. Cluster sampling

b. Systematic sampling

c. Convenience sampling

d. Stratified sampling

In hypothesis testing, what is the level of significance (alpha) commonly set at to test the null hypothesis?

a. 0.05

b. 0.01

c. 0.10

d. 0.001

There are basically two types of random variables; __________ and continuous random variables.

a. Independent

b. Discrete..

c. Exploratory

d. Dependent

A random sample of size 18 and 12 were selected from two normal populations A and B, respectively. To determine if there is a difference in the population means assuming independent sample and equal variances, the degrees of freedom will be

a. 30

b. 15

c. 29

d. 28

The term ANOVA

a. has no special meaning

b. stands for Analysis of Variables

c. stands for Analysis of Variance

d. stands for Another Numeric Observation of the Variance

Which of the following is correct about the difference between a one-tailed test and a two-tailed test?

a. In a one-tailed test, the rejection region is always in the upper tails, while in a two-tailed test the rejection region is split between the tails.

b. In a one-tailed test, the rejection region is always in the lower tails, while in a two-tailed test the rejection region is split between the tails.

c. In a one-tailed test, the rejection region is in one of the tails, while in a two-tailed test the rejection region is split between the tails

d. In a two-tailed test, the rejection region is in one of the tails, while in a one-tailed test the rejection region is split between the tails.

Which of the following statements is true about the null hypothesis?

a. Will always contain zero

b. It is an initial statement about the value of the parameter

c. Can be estimated from the sample

d. Must not contain zero

Which of the following statements is not an example of a continuous random variable?

a. The price for cheesecake in New York Style cheesecake

b. The number of mistakes made by a typist on a randomly chosen page of a manuscript

c. The time it takes you to finish a statistics test

d. The weight gain in kilograms per month for a calf

A statistic is to a sample as ___________ is to a population.

a. Parameter

b. Estimate

c. Variance

d. Average

Which of the following statements is an example of a continuous random variable?

a. The depth of Lake Michigan at a randomly chosen point on the surface

b. Total number of students taking a particular course

c. The number of credit units you registered for this semester

d. The number of gas stations in a city

Of a company’s employees, 30% are women and 6% are married women. Suppose an employee is selected at random. If the employee selected is a woman, what is the probability that she is married?

a. 0.06

b. 0.018

c. 0.30

d. 0.20

Here are basically two types of random variables; __________ and continuous random variables.

a. Exploratory

b. Discrete

c. Independent

d. Dependent

Which of the following statements best describes the relationship between a parameter and a statistic?

a. A parameter is used to estimate a statistic

b. A parameter has a sampling distribution that can be used to determine what values the statistic is likely to have in repeated samples

c. A parameter has a sampling distribution with the statistic as its mean

d. A statistic is used to estimate a parameter

The closer the correlation coefficient is to zero, ___________ the degree of association between the variables under consideration

a. the stronger

b. the clearer

c. the weaker

d. the better

The form of the alternative hypothesis can be

a. one or two-tailed

b. one-tailed

c. neither one nor two-tailed

d. two-tailed

A random or unbiased assignment of individuals or items to treatment groups to average out extraneous (or nuisance) factors is called

a. Randomization

b. Error control

c. Replication

d. Experiment

In hypothesis testing the type of the test to be used (one or two-tailed) is determined by

a. Null hypothesis

b. Acceptance region

c. Alternative hypothesis

d. Critical region

In hypotheses testing, the test value is obtained from

a. Hypotheses

b. Acceptance region

c. Critical region

d. Test statistic

In a two tailed test, the level of significance is

a. Divided by 2

b. Subtracted from 2

c. Multiplied by 2

d. Added to 2

In the regression analysis of the form as y=β 0 + β 1 x + e, the variable x is known as

a. Independent

b. Treatment

c. Yield

d. Dependent

Which of the following statements is not correct?

a. The number of movies you watched last year is an example of a continuous random variable

b. To study basic properties of discrete random variables, only the tools of discrete mathematics -summation and differences – are required.

c. The study of continuous random variables requires the continuous mathematics of the calculus integrals and derivatives.

d. In general, each outcome of an experiment can be associated with a number by specifying a degree of association.

What is the probability that two female students will be selected at random, one after the other, to participate in a research project from a class of 7 male and 3 female students?

a. 2/9

b. 1/10

c. 1/15

d. 3/10

In a two tailed test, the level of significance is

a. Subtracted from 2

b. Divided by 2

c. Multiplied by 2

d. Added to 2

ANOVA F-test is said to be significant if

a. the alternative hypothesis of equality of treatment means is rejected based on the test criteria.

b. the null hypothesis of equality of treatment means is not rejected based on the test criteria.

c. the alternative hypothesis of equality of treatment means is not rejected based on the test criteria.

d. the null hypothesis of equality of treatment means is rejected based on the test criteria

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Acceptance region

b. Null hypothesis

c. Critical region

d. Alternative hypothesis

In hypotheses testing, the test value is obtained from

a. Test statistic

b. Hypotheses

c. Acceptance region

d.Critical region

The probability that Tope passes an exam is 1/3 and probability that his brother

and sister pass the same exam are 2/5 and 3/8 respectively. Find the probability that

The three of them will fail the exam.

a. 2/5

b. 1/4

c. 1/3

d. 3/8

There are basically two types of random variables; __________ and continuous random variables.

a. Exploratory

b. Independent

c. Discrete

d. Dependent

The closer the correlation coefficient is to zero, ___________ the degree of association between the variables under consideration

a. the clearer

b. the weaker

c. the stronger

d. the better

In regression analysis of the form as Y = β 0 + β 1 x + e, the variable x is known as

a. Yield

b. Dependent

c. Treatment

d. Independent

Which type of sampling technique involves dividing the population into groups or clusters and then randomly selecting entire clusters to form the sample?

a. Cluster sampling

b. Stratified sampling

c. Convenience sampling

d. Systematic sampling

An index number is used to:

a. Track the changes in a group of related variables over time

b. Calculate the average of a set of numbers

c. Measure the price level of a specific commodity

d. Compare two different commodities in different units

A correlation coefficient of 0 indicates that there is:

a. A perfect negative relationship between the variables

b. No relationship between the variables

c. A weak positive relationship between the variables

d. A perfect positive relationship between the variables

What is the primary purpose of statistics in scientific research?

a. To make data more confusing

b. To prove a hypothesis

c. To summarize and analyze data

d. To create fancy charts and graphs

In hypothesis testing, what is the level of significance (alpha) commonly set at to test the null hypothesis?

a. 0.01

b. 0.05

c. 0.001

d. 0.10

Which type of data is categorical and can be organized into groups or categories with no inherent order?

a. Nominal data

b. Interval data

c. Interval data

d. Ordinal data

Which type of sampling technique involves selecting every nth item from the population to form the sample?

a. Stratified sampling

b. Systematic sampling

c. Convenience sampling

d. Cluster sampling

Which type of sampling technique involves dividing the population into groups or clusters and then randomly selecting entire clusters to form the sample?

a. Cluster sampling

b. Stratified sampling

c. Convenience sampling

d. Systematic sampling

_________ measures the degree of relationship between two variables X and Y.

a. Correlation coefficient

b. Variance

c. Moment

d. Coefficient of variation

Which of the following statements is not an example of a continuous random variable?

a.The price for cheesecake in New York Style cheesecake

b. The weight gain in kilograms per month for a calf

c. The time it takes you to finish a statistics test

d. The number of mistakes made by a typist on a randomly chosen page of a manuscript

Which of the following is correct about the difference between a one-tailed test and a two-tailed test?

a. In a one-tailed test, the rejection region is always in the upper tails, while in a two-tailed test the rejection region is split between the tails.

b. In a one-tailed test, the rejection region is in one of the tails, while in a two-tailed test the rejection region is split between the tails

c. In a one-tailed test, the rejection region is always in the lower tails, while in a two-tailed test the rejection region is split between the tails.

d. In a two-tailed test, the rejection region is in one of the tails, while in a one-tailed test the rejection region is split between the tails.

Which of the following statement is true about the null hypothesis?

a. Can be estimated from the sample

b. Must not contain zero

c. It is an initial statement about the value of the paramete

d. Will always contain zero

The term ANOVA

a. has no special meaning

b. stands for Another Numeric Observation of the Variance

c. stands for Analysis of Variables

d. stands for Analysis of Variance

Three cards are drawn randomly from a deck of cards one after the other with

replacement each time. Find the probability that the three cards are a 5, a heart and

a king.

a. 1/676

b. 1/8

c. 1/52

d. 1/64

Which of the following statements is not an example of a discrete random variable?

a. The age of female respondents to a questionnaire about gender differences

b. The number of female respondents to a questionnaire about gender differences

c. The number of school-age children in a particular family

d. The number of sales a salesperson makes per year

Which of the following statements is not an example of a discrete random variable?

a. The age of female respondents to a questionnaire about gender differences

b. The number of female respondents to a questionnaire about gender differences

c. The number of school-age children in a particular family

d. The number of sales a salesperson makes per year

A statistic is to a sample as ___________ is to a population.

a. Estimate

b. Parameter

c. Average

d. Variance

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Critical region

b. Null hypothesis

c. Alternative hypothesis

d. Acceptance region

An index number is used to:

a. Measure the price level of a specific commodity

b. Calculate the average of a set of numbers

c. Track the changes in a group of related variables over time

d. Compare two different commodities in different units

Which level of measurement has a true zero point and allows for meaningful ratios between data points?

a. Ordinal

b. Nominal

c. Ratio

d. Interval

What is the primary purpose of statistics in scientific research?

a. To create fancy charts and graphs

b. To summarize and analyze data

c. To prove a hypothesis

d. To make data more confusing

In estimation theory, what is a point estimate?

a. A measure of the dispersion of the sample data

b. A single value that is used to approximate the population parameter

c. The average of the sample data

d. A range of values that likely contains the population parameter

In the chi-square test for goodness of fit, the null hypothesis assumes that:

a. There is no association between the variables being tested

b. The sample size is too small to draw any conclusions

c. The sample is normally distributed

d. There is an association between the variables being tested.

Which index number formula considers the expenditure shares of the base year while constructing the index?

a.  Marshall-Edgeworth Price Index

b. Fisher Price Index

c. Paasche Price Index

d. Laspeyres Price Index

Goodness of fit is a statistical technique used to:

a. Determine if an observed frequency distribution fits an expected theoretical distribution

b. Compare the means of two or more groups

c. Measure the correlation between two variables

d. Assess the variability of a dataset

Correlation is a statistical measure that describes the:

a. Difference between two variables

b. Causation between two variables

c. Strength and direction of the linear relationship between two variables…..

d. Proportion of variability explained by two variables

Which type of sampling technique involves selecting every nth item from the population to form the sample?

a. Cluster sampling

b. Systematic sampling

c. Convenience sampling

d. Stratified sampling

In hypothesis testing, what is the level of significance (alpha) commonly set at to test the null hypothesis?

a. 0.05

b. 0.01

c. 0.10

d. 0.001

There are basically two types of random variables; __________ and continuous random variables.

a. Independent

b. Discrete

c. Exploratory

d. Dependent

A random sample of size 18 and 12 were selected from two normal populations A and B respectively. To determine if there is a difference in the population means assuming independent sample and equal variances, the degrees of freedom will be

a. 30

b. 15

c. 29

d. 28

The term ANOVA

a. has no special meaning

b. stands for Analysis of Variables

c. stands for Analysis of Variance

d. stands for Another Numeric Observation of the Variance

Which of the following is correct about the difference between a one-tailed test and a two-tailed test?

a. In a one-tailed test, the rejection region is always in the upper tails, while in a two-tailed test the rejection region is split between the tails.

b. In a one-tailed test, the rejection region is always in the lower tails, while in a two-tailed test the rejection region is split between the tails.

c. In a one-tailed test, the rejection region is in one of the tails, while in a two-tailed test the rejection region is split between the tails

d. In a two-tailed test, the rejection region is in one of the tails, while in a one-tailed test the rejection region is split between the tails.

Which of the following statement is true about the null hypothesis?

a. Will always contain zero

b. It is an initial statement about the value of the parameter

c. Can be estimated from the sample

d. Must not contain zero

Which of the following statements is not an example of a continuous random variable?

a. The price for cheesecake in New York Style cheesecake

b. The number of mistakes made by a typist on a randomly chosen page of a manuscript

c. The time it takes you to finish a statistics test

d. The weight gain in kilograms per month for a calf

A statistic is to a sample as ___________ is to a population.

a. Parameter

b. Estimate

c. Variance

d. Average

Three cards are drawn randomly from a deck of cards one after the other with replacement each time. Find the probability that the three cards are a 5, a heart and a king.

a. 1/8

b. 1/676

c. 1/64

d. 1/52

Which of the following statements is an example of a continuous random variable?

a. The depth of Lake Michigan at a randomly chosen point on the surface

b. Total number of students taking a particular course

c. The number of credit units you registered for this semester

d. The number of gas stations in a city

Of a company’s employees, 30% are women and 6% are married women. Suppose an employee is selected at random. If the employee selected is a woman, what is the probability that she is married?

a. 0.06

b. 0.018

c. 0.30

d. 0.20

here are basically two types of random variables; __________ and continuous random variables.

a. Exploratory

b. Discrete

c. Independent

d. Dependent

Which of the following statements best describes the relationship between a parameter and a statistic?

a. A parameter is used to estimate a statistic

b. A parameter has a sampling distribution that can be used to determine what values the statistic is likely to have in repeated samples

c. A parameter has a sampling distribution with the statistic as its mean

d. A statistic is used to estimate a parameter

The closer the correlation coefficient is to zero, ___________ the degree of association between the variables under consideration

a. the stronger

b. the clearer

c. the weaker

d. the better

The form of the alternative hypothesis can be

a. one or two-tailed

b. one-tailed

c. neither one nor two-tailed

d. two-tailed

A random or unbiased assignment of individuals or items to treatment groups in order to average out extraneous (or nuisance) factor is called

a. Randomization

b. Error control

C. Replication

c. Experiment

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Null hypothesis

b. Acceptance region

c. Alternative hypothesis

d. Critical region

In a two tailed test, the level of significance is

a. Divided by 2

b. Subtracted from 2

c. Multiplied by 2

d. Added to 2

In regression analysis of the form as y=β 0 + β 1 x + e, the variable x is known as

a. Independent

b. Treatment

c. Yield

d. DependentSTT206 TMA

Which of the following statements is not correct?

a. The number of movies you watched last year is an example of a continuous random variable

b. To study basic properties of discrete random variables, only the tools of discrete mathematics -summation and differences – are required.

c. The study of continuous random variables requires the continuous mathematics of the calculus integrals and derivatives.

d. In general, each outcome of an experiment can be associated with a number by specifying a degree of association.

What is the probability that two female students will be selected at random, one after the other, to participate in a research project from a class of 7 male and 3 female students?

a.2/9

b.1/10

c.1/15

e. 3/10

In a two tailed test, the level of significance is

a. Subtracted from 2

b. Divided by 2

c. Multiplied by 2

d. Added to 2

ANOVA F-test is said to be significant if

a. the alternative hypothesis of equality of treatment means is rejected based on the test criteria.

b. the null hypothesis of equality of treatment means is not rejected based on the test criteria.

c. the alternative hypothesis of equality of treatment means is not rejected based on the test criteria.

d. the null hypothesis of equality of treatment means is rejected based on the test criteria

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Acceptance region

b. Null hypothesis

c. Critical region

d. Alternative hypothesis

In hypotheses testing, the test value is obtained from

a. Test statistic

b. Hypotheses

c. Acceptance region

d. Critical region

The probability that Tope passes an exam is 1/3 and probabilities that his brother

and sister pass the same exam are 2/5 and 3/8 respectively. Find the probability that

the three of them will fail the exam.

a. 2/5

b. 1/4

c. 1/3

d. 3/8

There are basically two types of random variables; __________ and continuous random variables.

a. Exploratory

b. Independent

c. Discrete

d. Dependent

The closer the correlation coefficient is to zero, ___________ the degree of association between the variables under consideration

a. the clearer

b. the weaker

c. the stronger

d. the better

In regression analysis of the form as y = β 0 + β 1 x + e

, the variable x is known as

a. Yield

b. Dependent

c. Treatment

d. Independent

Which type of sampling technique involves dividing the population into groups or clusters and then randomly selecting entire clusters to form the sample?

a. Cluster sampling

b. Stratified sampling

c. Convenience sampling

d. Systematic sampling

An index number is used to:

a. Track the changes in a group of related variables over time

b. Calculate the average of a set of numbers

c. Measure the price level of a specific commodity

d. Compare two different commodities in different units

A correlation coefficient of 0 indicates that there is:

a. A perfect negative relationship between the variables

b. No relationship between the variables

c. A weak positive relationship between the variables

d. A perfect positive relationship between the variables

What is the primary purpose of statistics in scientific research?

a. To make data more confusing

b. To prove a hypothesis

c. To summarize and analyze data

d. To create fancy charts and graphs

In hypothesis testing, what is the level of significance (alpha) commonly set at to test the null hypothesis?

a. 0.01

b. 0.05

c. 0.001

d. 0.10

Which type of data is categorical and can be organized into groups or categories with no inherent order?

a. Nominal data

b. Interval data

c. Interval data

d. Ordinal data

Which type of sampling technique involves selecting every nth item from the population to form the sample?

a. Stratified sampling

b. Systematic sampling

c. Convenience sampling

d. Cluster sampling

Which type of sampling technique involves dividing the population into groups or clusters and then randomly selecting entire clusters to form the sample?

a. Cluster sampling

b. Stratified sampling

c. Convenience sampling

d. Systematic sampling

_________ measures the degree of relationship between two variables X and Y.

a. Correlation coefficient

b. Variance

c. Moment

d. Coefficient of variation

Which of the following statements is not an example of a continuous random variable?

a. The price for cheesecake in New York Style cheesecake

b. The weight gain in kilograms per month for a calf

c. The time it takes you to finish a statistics test

d. The number of mistakes made by a typist on a randomly chosen page of a manuscript

Which of the following is correct about the difference between a one-tailed test and a two-tailed test?

a. In a one-tailed test, the rejection region is always in the upper tails, while in a two-tailed test the rejection region is split between the tails.

b. In a one-tailed test, the rejection region is in one of the tails, while in a two-tailed test the rejection region is split between the tails

c. In a one-tailed test, the rejection region is always in the lower tails, while in a two-tailed test the rejection region is split between the tails.

d. In a two-tailed test, the rejection region is in one of the tails, while in a one-tailed test the rejection region is split between the tails.

Which of the following statement is true about the null hypothesis?

a. Can be estimated from the sample

b. Must not contain zero

c. It is an initial statement about the value of the parameter

d. Will always contain zero

The term ANOVA

a. has no special meaning

b. stands for Another Numeric Observation of the Variance

c. stands for Analysis of Variables

d. stands for Analysis of Variance

Which of the following statements is not an example of a discrete random variable?

a. The age of female respondents to a questionnaire about gender differences

b. The number of female respondents to a questionnaire about gender differences

c. The number of school-age children in a particular family

d. The number of sales a salesperson makes per year

Which of the following statements is not an example of a discrete random variable?

a. The age of female respondents to a questionnaire about gender differences

b. The number of female respondents to a questionnaire about gender differences

c. The number of school-age children in a particular family

d. The number of sales a salesperson makes per year

A statistic is to a sample as ___________ is to a population.

a. Estimate

b. Parameter

c. Average

d. Variance

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Critical region

b. Null hypothesis

c. Alternative hypothesis

d. Acceptance region

An index number is used to:

a. Measure the price level of a specific commodity

b. Calculate the average of a set of numbers

c. Track the changes in a group of related variables over time

d. Compare two different commodities in different units

Which level of measurement has a true zero point and allows for meaningful ratios between data points?

a. Ordinal

b. Nominal

c. Ratio

d. Interval

What is the primary purpose of statistics in scientific research?

a. To create fancy charts and graphs

b. To summarize and analyze data

c. To prove a hypothesis

d.To make data more confusing

In estimation theory, what is a point estimate?

a. A measure of the dispersion of the sample data

b. A single value that is used to approximate the population parameter

c. The average of the sample data

d. A range of values that likely contains the population parameter

In the chi-square test for goodness of fit, the null hypothesis assumes that:

a. There is no association between the variables being tested

b. The sample size is too small to draw any conclusions

c.The sample is normally distributed

c. There is an association between the variables being tested.

Which index number formula considers the expenditure shares of the base year while constructing the index?

a. Marshall-Edgeworth Price Index

b. Fisher Price Index

c. Paasche Price Index

d. Laspeyres Price Index

Goodness of fit is a statistical technique used to:

a. Determine if an observed frequency distribution fits an expected theoretical distribution

b. Compare the means of two or more groups

c. Measure the correlation between two variables

d. Assess the variability of a dataset

Correlation is a statistical measure that describes the:

a. Difference between two variables

b. Causation between two variables

c. Strength and direction of the linear relationship between two variables

d. Proportion of variability explained by two variables

Which type of sampling technique involves selecting every nth item from the population to form the sample?

a. Cluster sampling

b. Systematic sampling

c. Convenience sampling

d. Stratified sampling

In hypothesis testing, what is the level of significance (alpha) commonly set at to test the null hypothesis?

a. 0.05

b. 0.01

c. 0.10

d. 0.001

There are basically two types of random variables; __________ and continuous random variables.

a. Independent

b. Discrete

c. Exploratory

d. Dependent

A random sample of size 18 and 12 were selected from two normal populations A and B respectively. To determine if there is a difference in the population means assuming independent sample and equal variances, the degrees of freedom will be

a. 30

b. 15

c. 29

d. 28

The term ANOVA

a. has no special meaning

b. stands for Analysis of Variables

c. stands for Analysis of Variance

d. stands for Another Numeric Observation of the Variance

Which of the following is correct about the difference between a one-tailed test and a two-tailed test?

a. In a one-tailed test, the rejection region is always in the upper tails, while in a two-tailed test the rejection region is split between the tails.

b. In a one-tailed test, the rejection region is always in the lower tails, while in a two-tailed test the rejection region is split between the tails.

c. In a one-tailed test, the rejection region is in one of the tails, while in a two-tailed test the rejection region is split between the tails

d. In a two-tailed test, the rejection region is in one of the tails, while in a one-tailed test the rejection region is split between the tails.

Which of the following statement is true about the null hypothesis?

a. Will always contain zero

b. It is an initial statement about the value of the parameter

c. Can be estimated from the sample

d. Must not contain zero

Which of the following statements is not an example of a continuous random variable?

a. The price for cheesecake in New York Style cheesecake

b. The number of mistakes made by a typist on a randomly chosen page of a manuscript

c. The time it takes you to finish a statistics test

d. The weight gain in kilograms per month for a calf

A statistic is to a sample as ___________ is to a population.

a. Parameter

b. Estimate

c. Variance

d. Average

Three cards are drawn randomly from a deck of cards one after the other with

replacement each time. Find the probability that the three cards are a 5, a heart and

a king.

a. 1/8

b. 1/676

c. 1/64

d. 1/52

Which of the following statements is an example of a continuous random variable?

a. The depth of Lake Michigan at a randomly chosen point on the surface

b. Total number of students taking a particular course

c. The number of credit units you registered for this semester

d. The number of gas stations in a city

Of a company’s employees, 30% are women and 6% are married women. Suppose an employee is selected at random. If the employee selected is a woman, what is the probability that she is married?

a. 0.06

b. 0.018

c. 0.30

d. 0.20

here are basically two types of random variables; __________ and continuous random variables.

a. Exploratory

b. Discrete

c. Independent

d. Dependent

Which of the following statements best describes the relationship between a parameter and a statistic?

a. A parameter is used to estimate a statistic

b. A parameter has a sampling distribution that can be used to determine what values the statistic is likely to have in repeated samples

c. A parameter has a sampling distribution with the statistic as its mean

d. A statistic is used to estimate a parameter

The closer the correlation coefficient is to zero, ___________ the degree of association between the variables under consideration

a. the stronger

b. the clearer

c. the weaker

d. the better

The form of the alternative hypothesis can be

a. one or two-tailed

b. one-tailed

c. neither one nor two-tailed

d. two-tailed

A random or unbiased assignment of individuals or items to treatment groups in order to average out extraneous (or nuisance) factor is called

a. Randomization

b. Error control

c. Replication

d. Experiment

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Null hypothesis

b. Acceptance region

c. Alternative hypothesis

d. Critical region

In a two tailed test, the level of significance is

a. Divided by 2

b. Subtracted from 2

c.Multiplied by 2

d.Added to 2

In regression analysis of the form as y=β 0 + β 1 x + e, the variable x is known as

a. Independent

b. Treatment

c. Yield

d. Dependent

Which of the following statements is not correct?

a. The number of movies you watched last year is an example of a continuous random variable

b. To study basic properties of discrete random variables, only the tools of discrete mathematics -summation and differences – are required.

c. The study of continuous random variables requires the continuous mathematics of the calculus integrals and derivatives.

d. In general, each outcome of an experiment can be associated with a number by specifying a degree of association.

What is the probability that two female students will be selected at random, one after the other, to participate in a research project from a class of 7 male and 3 female students?

a. 2/9

b. 1/10

c. 1/15

d. 3/10

In a two tailed test, the level of significance is

a. Subtracted from 2

b. Divided by 2….

c. Multiplied by 2

d. Added to 2

ANOVA F-test is said to be significant if

a. the alternative hypothesis of equality of treatment means is rejected based on the test criteria.

b. the null hypothesis of equality of treatment means is not rejected based on the test criteria.

c. the alternative hypothesis of equality of treatment means is not rejected based on the test criteria.

d. the null hypothesis of equality of treatment means is rejected based on the test criteria

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Acceptance region

b. Null hypothesis

c. Critical region

d. Alternative hypothesis

In hypotheses testing, the test value is obtained from

a. Test statistic

b. Hypotheses

c. Acceptance region

d. Critical region

The probability that Tope passes an exam is 1/3 and probabilities that his brother

and sister pass the same exam are 2/5 and 3/8 respectively. Find the probability that

the three of them will fail the exam.

a. 2/5

b. 1/4

c. 1/3

d. 3/8

There are basically two types of random variables; __________ and continuous random variables.

a. Exploratory

b.  Independent

c. Discrete

d. Dependent

The closer the correlation coefficient is to zero, ___________ the degree of association between the variables under consideration

a. the clearer

b. the weaker

c. the stronger

d. the better

In regression analysis of the form as y = B 0 + β 1 x e, the variable x is known as

a. Yield

b. Dependent

c. Treatment

d. Independent

Which type of sampling technique involves dividing the population into groups or clusters and then randomly selecting entire clusters to form the sample?

a. Cluster sampling

b. Stratified sampling

c. Convenience sampling

d. Systematic sampling

An index number is used to:

a. Track the changes in a group of related variables over time

b. Calculate the average of a set of numbers

c. Measure the price level of a specific commodity

d. Compare two different commodities in different units

A correlation coefficient of 0 indicates that there is:

a. A perfect negative relationship between the variables

b. No relationship between the variables

c. A weak positive relationship between the variables

d. A perfect positive relationship between the variables

What is the primary purpose of statistics in scientific research?

a. To make data more confusing

b. To prove a hypothesis

c. To summarize and analyze data

d. To create fancy charts and graphs

In hypothesis testing, what is the level of significance (alpha) commonly set at to test the null hypothesis?

a. 0.01

b. 0.05

c. 0.001

d. 0.10

Which type of data is categorical and can be organized into groups or categories with no inherent order?

a. Nominal data

b. Interval data

c. Interval data

d.Ordinal data

Which type of sampling technique involves selecting every nth item from the population to form the sample?

a.Stratified sampling

b.Systematic sampling

c.Convenience sampling

d.Cluster sampling

Which type of sampling technique involves dividing the population into groups or clusters and then randomly selecting entire clusters to form the sample?

a. Cluster sampling

b. Stratified sampling

c. Convenience sampling

d. Systematic sampling

_________ measures the degree of relationship between two variables X and Y.

a. Correlation coefficient

b. Variance

c. Moment

d. Coefficient of variation

Which of the following statements is not an example of a continuous random variable?

a. The price for cheesecake in New York Style cheesecake

b. The weight gain in kilograms per month for a calf

c. The time it takes you to finish a statistics test

d. The number of mistakes made by a typist on a randomly chosen page of a manuscript

Which of the following is correct about the difference between a one-tailed test and a two-tailed test?

a. In a one-tailed test, the rejection region is always in the upper tails, while in a two-tailed test the rejection region is split between the tails.

b. In a one-tailed test, the rejection region is in one of the tails, while in a two-tailed test the rejection region is split between the tails

c. In a one-tailed test, the rejection region is always in the lower tails, while in a two-tailed test the rejection region is split between the tails.

d. In a two-tailed test, the rejection region is in one of the tails, while in a one-tailed test the rejection region is split between the tails.

Which of the following statement is true about the null hypothesis?

a. Can be estimated from the sample

b. Must not contain zero

c. It is an initial statement about the value of the parameter

d. Will always contain zero

The term ANOVA

a. has no special meaning

b. stands for Another Numeric Observation of the Variance

c. stands for Analysis of Variables

d. stands for Analysis of Variance

Which of the following statements is not an example of a discrete random variable?

a. The age of female respondents to a questionnaire about gender differences

b. The number of female respondents to a questionnaire about gender differences

c. The number of school-age children in a particular family

d. The number of sales a salesperson makes per year

Which of the following statements is not an example of a discrete random variable?

a. The age of female respondents to a questionnaire about gender differences

b. The number of female respondents to a questionnaire about gender differences

c. The number of school-age children in a particular family

d. The number of sales a salesperson makes per year

A statistic is to a sample as ___________ is to a population.

a. Estimate

b. Parameter…..

c. Average

d. Variance

In hypothesis testing the type of the test to be used (one or two tailed) is determined by

a. Critical region

b. Null hypothesis

c. Alternative hypothesis       

d. Acceptance region

An index number is used to:

a. Measure the price level of a specific commodity

b. Calculate the average of a set of numbers

c. Track the changes in a group of related variables over time

d. Compare two different commodities in different units

Which level of measurement has a true zero point and allows for meaningful ratios between data points?

a. Ordinal

b. Nominal

c. Ratio

d. Interval

What is the primary purpose of statistics in scientific research?

a. To create fancy charts and graphs

b. To summarize and analyze data

c. To prove a hypothesis

d. To make data more confusing

In estimation theory, what is a point estimate?

a. A measure of the dispersion of the sample data

b. A single value that is used to approximate the population parameter

c. The average of the sample data

d. A range of values that likely contains the population parameter

In the chi-square test for goodness of fit, the null hypothesis assumes that:

a. There is no association between the variables being tested

b. The sample size is too small to draw any conclusions

c. The sample is normally distributed

d. There is an association between the variables being tested.

Which index number formula considers the expenditure shares of the base year while constructing the index?

a. Marshall-Edgeworth Price Index

b. Fisher Price Index

c.

Paasche Price Index

d.Laspeyres Price Index

Goodness of fit is a statistical technique used to:

a. Determine if an observed frequency distribution fits an expected theoretical distribution

b. Compare the means of two or more groups

c. Measure the correlation between two variables

d. Assess the variability of a dataset

Correlation is a statistical measure that describes the:

a. Difference between two variables

b. Causation between two variables

c. Strength and direction of the linear relationship between two variables

d. Proportion of variability explained by two variables

Which type of sampling technique involves selecting every nth item from the population to form the sample?

a. Cluster sampling

b. Systematic sampling

c. Convenience sampling

d. Stratified sampling

In hypothesis testing, what is the level of significance (alpha) commonly set at to test the null hypothesis?

a. 0.05.

b. 0.01

c. 0.10

d.0.001

There are basically two types of random variables; __________ and continuous random variables.

a. Independent

b. Discrete

c.Exploratory

d.Dependent

A random sample of size 18 and 12 were selected from two normal populations A and B respectively. To determine if there is a difference in the population means assuming independent sample and equal variances, the degrees of freedom will be

a. 30

b. 15

c. 29

d. 28

The term ANOVA

a. has no special meaning

b. stands for Analysis of Variables

c. stands for Analysis of Variance

d. stands for Another Numeric Observation of the Variance

Which of the following is correct about the difference between a one-tailed test and a two-tailed test?

a. In a one-tailed test, the rejection region is always in the upper tails, while in a two-tailed test the rejection region is split between the tails.

b. In a one-tailed test, the rejection region is always in the lower tails, while in a two-tailed test the rejection region is split between the tails.

c. In a one-tailed test, the rejection region is in one of the tails, while in a two-tailed test the rejection region is split between the tails

d. In a two-tailed test, the rejection region is in one of the tails, while in a one-tailed test the rejection region is split between the tails.

Which of the following statement is true about the null hypothesis?

a. Will always contain zero

b. It is an initial statement about the value of the parameter

c. Can be estimated from the sample

d. Must not contain zero

Which of the following statements is not an example of a continuous random variable?

a. The price for cheesecake in New York Style cheesecake

b. The number of mistakes made by a typist on a randomly chosen page of a manuscript….

c. The time it takes you to finish a statistics test

d. The weight gain in kilograms per month for a calf

A statistic is to a sample as ___________ is to a population.

a. Parameter

b. Estimate

c. Variance

d. Average

Three cards are drawn randomly from a deck of cards one after the other with

replacement each time. Find the probability that the three cards are a 5, a heart and

a king.

a. 1/8

b. 1/676…

c. 1/64

d. 1/52

Which of the following statements is an example of a continuous random variable?

a. The depth of Lake Michigan at a randomly chosen point on the surface

b. Total number of students taking a particular course

c. The number of credit units you registered for this semester

d. The number of gas stations in a city

Of a company’s employees, 30% are women and 6% are married women. Suppose an employee is selected at random. If the employee selected is a woman, what is the probability that she is married?

a. 0.06

b. 0.018

c. 0.30

d. 0.20

here are basically two types of random variables; __________ and continuous random variables.

a. Exploratory

b. Discrete

c. Independent

d. Dependent

Which of the following statements best describes the relationship between a parameter and a statistic?

a. A parameter is used to estimate a statistic

b. A parameter has a sampling distribution that can be used to determine what values the statistic is likely to have in repeated samples

c. A parameter has a sampling distribution with the statistic as its mean

d. A statistic is used to estimate a parameter

The closer the correlation coefficient is to zero, ___________ the degree of association between the variables under consideration

a. the stronger

b. the clearer

c. the weaker

d. the better

The form of the alternative hypothesis can be

a. one or two-tailed 

b. one-tailed

c. neither one nor two-tailed

d. two-tailed

A random or unbiased assignment of individuals or items to treatment groups in order to average out extraneous (or nuisance) factor is called

a. Randomization,,,,

b. Error control

c. Replication