Question 1

Estelle would like to find out if there is a trend between two variables, both of which are on an interval scale. What test should she use? Why?

Accepted Answer

Pearson correlation

Question 2

Which of the following tests will allow you to answer a research question that involves an interaction between two variables on an ordinal outcome?

Accepted Answer

A)  Two-way ANOVA 
B)  One-way ANOVA 
C)  Two-way chi-square test 
D)  One-way chi-square test 
A)  Two-way ANOVA 
B)  One-way ANOVA 
C)  Two-way chi-square test 
D)  One-way chi-square test

Question 3

Kelly would like to know if the mean of her sample is significantly different from the population mean. What test should she use? Why?

Accepted Answer

Single-sample t-test

Question 4

If Cynthia wants to compare a set of five independent means, she can use the one-way ANOVA.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is true about the Pearson correlation coefficient and the Spearman rank-ordered correlation coefficient?

Accepted Answer

A)  Both tests make the same assumptions. 
B)  Both tests deal with ordinal data. 
C)  Both tests can produce a negative coefficient. 
D)  None of the above. 
A)  Both tests make the same assumptions. 
B)  Both tests deal with ordinal data. 
C)  Both tests can produce a negative coefficient. 
D)  None of the above.

Question 6

Which of the following is a test that makes parametric assumptions?

Accepted Answer

A)  One-way chi-square test 
B)  Spearman rank-ordered correlation coefficient 
C)  Mann-Whitney U-test 
D)  Z-test 
A)  One-way chi-square test 
B)  Spearman rank-ordered correlation coefficient 
C)  Mann-Whitney U-test 
D)  Z-test

Question 7

Ben would like to compare two independent sample means. He can use:

Accepted Answer

A)  ANOVA only 
B)  Independent samples t-test only 
C)  ANOVA or independent samples t-test 
D)  Chi-square test only 
A)  ANOVA only 
B)  Independent samples t-test only 
C)  ANOVA or independent samples t-test 
D)  Chi-square test only

Question 8

An independent samples t-test allows you to test…

Accepted Answer

A)  Whether the two samples are related 
B)  Whether two means are different from one another 
C)  Whether subjects in a sample differ from the population mean on average 
D)  Whether samples in a sample differ from a normal distribution 
A)  Whether the two samples are related 
B)  Whether two means are different from one another 
C)  Whether subjects in a sample differ from the population mean on average 
D)  Whether samples in a sample differ from a normal distribution

Question 9

If Lianna wants to compare a sample mean to the population mean and she knows the population standard deviation, she should use the z-test.

Accepted Answer

A) True 
 B)False

Question 10

What is an additional feature of the two-way ANOVA that is not present in a one-way ANOVA?

Accepted Answer

A)  A two-way ANOVA allows you to examine the relationship between two variables. 
B)  A two-way ANOVA allows you to examine multiple levels of a single variable. 
C)  A two-way ANOVA allows you to examine whether the effects of a variable on the outcome measure depends on the levels of another variable. 
D)  A two-way ANOVA allows you to examine whether the effects of two variables on an outcome variable are independent from each other. 
A)  A two-way ANOVA allows you to examine the relationship between two variables. 
B)  A two-way ANOVA allows you to examine multiple levels of a single variable. 
C)  A two-way ANOVA allows you to examine whether the effects of a variable on the outcome measure depends on the levels of another variable. 
D)  A two-way ANOVA allows you to examine whether the effects of two variables on an outcome variable are independent from each other.

Question 11

A one-sample t-test allows you to test…

Accepted Answer

A)  Whether the two samples are related 
B)  Whether two means are different from one another 
C)  Whether subjects in a sample differ from the population mean on average 
D)  Whether samples in a sample differ from a normal distribution 
A)  Whether the two samples are related 
B)  Whether two means are different from one another 
C)  Whether subjects in a sample differ from the population mean on average 
D)  Whether samples in a sample differ from a normal distribution

Question 12

The one-way chi-square tests the…

Accepted Answer

A)  Frequency of discrete outcomes 
B)  Difference between sample means 
C)  Relationship between two variables 
D)  None of the above 
A)  Frequency of discrete outcomes 
B)  Difference between sample means 
C)  Relationship between two variables 
D)  None of the above

Question 13

Jennifer would like to compare two means generated from twin samples where each twin in a pair belonged to a different group from the other twin. She can use:

Accepted Answer

A)  Repeated measures ANOVA only 
B)  Dependent samples t-test only 
C)  Repeated measure ANOVA or dependent samples t-test 
D)  Chi-square test only 
A)  Repeated measures ANOVA only 
B)  Dependent samples t-test only 
C)  Repeated measure ANOVA or dependent samples t-test 
D)  Chi-square test only

Question 14

If you are conducting research and do not know the standard deviation of the underlying population, which of the tests below would you immediately not be able to use?

Accepted Answer

A)  Single-sample t-test 
B)  One-way ANOVA 
C)  Any non-parametric test 
D)  Z-test 
A)  Single-sample t-test 
B)  One-way ANOVA 
C)  Any non-parametric test 
D)  Z-test

Question 15

Since computers can handle more complex calculations, you can be assured that any data fed into the computer will produce meaningful conclusions.

Accepted Answer

A) True 
 B)False

Question 16

What is a difference between the two-way chi-square test and the two-way ANOVA?

Accepted Answer

A)  The two-way chi-square test assumes that the central limit theorem is true while the two-way ANONA does not. 
B)  The two-way chi-square test produced a p-value while the two-way ANOVA does not. 
C)  The two-way chi-square test allows you to test the interaction of interval data while the two-way ANOVA does not. 
D)  None of the above. 
A)  The two-way chi-square test assumes that the central limit theorem is true while the two-way ANONA does not. 
B)  The two-way chi-square test produced a p-value while the two-way ANOVA does not. 
C)  The two-way chi-square test allows you to test the interaction of interval data while the two-way ANOVA does not. 
D)  None of the above.

Question 17

Diana is running a dependent samples t-test. She is interested in:

Accepted Answer

A)  Whether two means are different from one another 
B)  Whether a difference between two related samples exists 
C)  Whether her subjects differ from the population mean on average 
D)  Whether her samples differ from a normal distribution 
A)  Whether two means are different from one another 
B)  Whether a difference between two related samples exists 
C)  Whether her subjects differ from the population mean on average 
D)  Whether her samples differ from a normal distribution

Question 18

The Pearson correlation coefficient allows you to test the interaction between two variables.

Accepted Answer

A) True 
 B)False

Question 19

For which of the following research questions is the use of the Pearson correlation coefficient appropriate?

Accepted Answer

A)  Peter wants to find whether the means of two independent groups are significantly different. 
B)  Joyce wants to find out whether the means of two dependent groups are significantly different. 
C)  Bryan wants to find out whether the mean of his observed sample is significantly different from the population. 
D)  None of the above 
A)  Peter wants to find whether the means of two independent groups are significantly different. 
B)  Joyce wants to find out whether the means of two dependent groups are significantly different. 
C)  Bryan wants to find out whether the mean of his observed sample is significantly different from the population. 
D)  None of the above

Question 20

Ava is studying the effects of maternal alcohol consumption on infant development. She asks a sample of mothers how many drinks they have a week and then has a pediatric nurse score the behavioral development of the infant on a Likert scale. Which of the following tests is most suitable for Ava's use?

Accepted Answer

A)  Independent samples t-test 
B)  Dependent samples t-test 
C)  Two-way ANOVA 
D)  Pearson correlation coefficient 
A)  Independent samples t-test 
B)  Dependent samples t-test 
C)  Two-way ANOVA 
D)  Pearson correlation coefficient

Estelle would like to find out if there is a trend between two variables, both of which are on an interval scale. What test should she use? Why?

Which of the following tests will allow you to answer a research question that involves an interaction between two variables on an ordinal outcome?

Kelly would like to know if the mean of her sample is significantly different from the population mean. What test should she use? Why?

If Cynthia wants to compare a set of five independent means, she can use the one-way ANOVA.

Which of the following is true about the Pearson correlation coefficient and the Spearman rank-ordered correlation coefficient?

Which of the following is a test that makes parametric assumptions?

Ben would like to compare two independent sample means. He can use:

An independent samples t-test allows you to test…

If Lianna wants to compare a sample mean to the population mean and she knows the population standard deviation, she should use the z-test.

What is an additional feature of the two-way ANOVA that is not present in a one-way ANOVA?

A one-sample t-test allows you to test…

The one-way chi-square tests the…

Jennifer would like to compare two means generated from twin samples where each twin in a pair belonged to a different group from the other twin. She can use:

If you are conducting research and do not know the standard deviation of the underlying population, which of the tests below would you immediately not be able to use?

Since computers can handle more complex calculations, you can be assured that any data fed into the computer will produce meaningful conclusions.

What is a difference between the two-way chi-square test and the two-way ANOVA?

Diana is running a dependent samples t-test. She is interested in:

The Pearson correlation coefficient allows you to test the interaction between two variables.

For which of the following research questions is the use of the Pearson correlation coefficient appropriate?

Introduction: Statistics--Who Needs Them

Types of Data

A Picture Is Worth a Thousand Words: Creating and Interpreting Graphics

Measures of Central Tendency: Whats so Average About the Mean

Variability: the Law of Life

Where Am I Normal Distributions and Standard Scores

Basic Probability Theory

The Central Limit Theorem and Hypothesis Testing

The Z-Test

The T-Test

Analysis of Variance

Confidence Intervals and Effect Size: Building a Better Mousetrap

Correlation and Regression: Are We Related

The Chi-Square Test

Non-Parametric Tests

Filters

Exam 16: Which Test Should I Use and Why

Estelle would like to find out if there is a trend between two variables, both of which are on an interval scale. What test should she use? Why?

Which of the following tests will allow you to answer a research question that involves an interaction between two variables on an ordinal outcome?

Kelly would like to know if the mean of her sample is significantly different from the population mean. What test should she use? Why?

If Cynthia wants to compare a set of five independent means, she can use the one-way ANOVA.

Which of the following is true about the Pearson correlation coefficient and the Spearman rank-ordered correlation coefficient?

Which of the following is a test that makes parametric assumptions?

Ben would like to compare two independent sample means. He can use:

An independent samples t-test allows you to test…

If Lianna wants to compare a sample mean to the population mean and she knows the population standard deviation, she should use the z-test.

What is an additional feature of the two-way ANOVA that is not present in a one-way ANOVA?

A one-sample t-test allows you to test…

The one-way chi-square tests the…

Jennifer would like to compare two means generated from twin samples where each twin in a pair belonged to a different group from the other twin. She can use:

If you are conducting research and do not know the standard deviation of the underlying population, which of the tests below would you immediately not be able to use?

Since computers can handle more complex calculations, you can be assured that any data fed into the computer will produce meaningful conclusions.

What is a difference between the two-way chi-square test and the two-way ANOVA?

Diana is running a dependent samples t-test. She is interested in:

The Pearson correlation coefficient allows you to test the interaction between two variables.

For which of the following research questions is the use of the Pearson correlation coefficient appropriate?

Introduction: Statistics--Who Needs Them

Types of Data

A Picture Is Worth a Thousand Words: Creating and Interpreting Graphics

Measures of Central Tendency: Whats so Average About the Mean

Variability: the Law of Life

Where Am I Normal Distributions and Standard Scores

Basic Probability Theory

The Central Limit Theorem and Hypothesis Testing

The Z-Test

The T-Test

Analysis of Variance

Confidence Intervals and Effect Size: Building a Better Mousetrap

Correlation and Regression: Are We Related

The Chi-Square Test

Non-Parametric Tests

Filters