Question 1

The advantage of comparing two kinds of treatment with a no-treatment group is

Accepted Answer

A)  we can do ANOVA 
B)  we can do an F test 
C)  we can determine whether the treatments have a positive or negative effect 
D)  all of the above 
A)  we can do ANOVA 
B)  we can do an F test 
C)  we can determine whether the treatments have a positive or negative effect 
D)  all of the above C

Question 2

The construct validity of a simple experiment should be questioned, especially if it used

Accepted Answer

A)  random assignment 
B)  matching 
C)  an empty control group 
D)  fewer than 30 participants 
A)  random assignment 
B)  matching 
C)  an empty control group 
D)  fewer than 30 participants C

Question 3

If an investigator explained the statistical analysis she performed on a design by saying she was dividing MS Between by MS Within, what, in fact, was she saying?

Accepted Answer

A)  that she was calculating the basic F test 
B)  that she was performing an analysis of covariance statistical analysis 
C)  that she was calculating a post hoc test 
D)  that she was didn't know what she was doing 
A)  that she was calculating the basic F test 
B)  that she was performing an analysis of covariance statistical analysis 
C)  that she was calculating a post hoc test 
D)  that she was didn't know what she was doing A

Question 4

______ is the same as ________ .

Accepted Answer

A)  MS Between, MS Error 
B)  MS Error, MS Within 
C)  MS Treatment, MS Within 
D)  MS Treatment, MS Error 
A)  MS Between, MS Error 
B)  MS Error, MS Within 
C)  MS Treatment, MS Within 
D)  MS Treatment, MS Error

Question 5

If you get a significant F in a five-group experiment, you should conduct post hoc tests to discover which groups are reliably different.

Accepted Answer

A) True 
 B)False

Question 6

The random assignment of subjects to two or more experimental conditions produces groups that are

Accepted Answer

A)  equal at the outset of the experiment 
B)  similar at the outset of the experiment 
C)  noticeably different at the outset of the experiment 
D)  noticeably different at the end of the experiment 
A)  equal at the outset of the experiment 
B)  similar at the outset of the experiment 
C)  noticeably different at the outset of the experiment 
D)  noticeably different at the end of the experiment

Question 7

If you conducted an experiment with 6 groups and 50 participants, you would look in a F table under 6 and 44 degrees of freedom.

Accepted Answer

A) True 
 B)False

Question 8

Within group variability is caused by which of the following?

Accepted Answer

A)  individual differences 
B)  chance factors 
C)  the independent variable 
D)  a and b 
A)  individual differences 
B)  chance factors 
C)  the independent variable 
D)  a and b

Question 9

If the null hypothesis is false, variability between groups reflects

Accepted Answer

A)  the treatment effect 
B)  random error 
C)  random error and possibly the treatment effect 
D)  random error and the treatment effect 
A)  the treatment effect 
B)  random error 
C)  random error and possibly the treatment effect 
D)  random error and the treatment effect

Question 10

In analysis of variance, differences between group means are represented by ____ variability.

Accepted Answer

A)  between groups 
B)  between subjects 
C)  within groups 
D)  within subjects 
A)  between groups 
B)  between subjects 
C)  within groups 
D)  within subjects

Question 11

Which of the following would be a source of between group variability?

Accepted Answer

A)  treatment effects 
B)  individual differences 
C)  both a and b 
D)  neither a nor b 
A)  treatment effects 
B)  individual differences 
C)  both a and b 
D)  neither a nor b

Question 12

The most common way to first analyze data from a multiple-group experiment is to compute an analysis of variance (ANOVA).

Accepted Answer

A) True 
 B)False

Question 13

In an experiment involving four different groups, each consisting of 5 participants, the degrees of freedom for between groups equals

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  20 
A)  3 
B)  4 
C)  5 
D)  20

Question 14

If an investigator explained the statistical analysis she performed on a design by saying she was dividing SS Between by SS Within, what, in fact, was she saying?

Accepted Answer

A)  that she was calculating the basic F test 
B)  that she was performing an analysis of covariance statistical analysis 
C)  that she was calculating a post hoc test 
D)  that she was didn't know what she was doing 
A)  that she was calculating the basic F test 
B)  that she was performing an analysis of covariance statistical analysis 
C)  that she was calculating a post hoc test 
D)  that she was didn't know what she was doing

Question 15

The F test is designed to see whether the differences between the group means are greater than would be expected by chance.

Accepted Answer

A) True 
 B)False

Question 16

In a table that summarizes the results of an analysis of variance, the word "Within"might be replaced by

Accepted Answer

A)  "Between" 
B)  "Error" 
C)  "Treatment" 
D)  "Total" 
A)  "Between" 
B)  "Error" 
C)  "Treatment" 
D)  "Total"

Question 17

Regardless of whether the null hypothesis is true or false, variability within groups reflects

Accepted Answer

A)  the treatment effect 
B)  random error 
C)  random error and possibly the treatment effect 
D)  random error and the treatment effect 
A)  the treatment effect 
B)  random error 
C)  random error and possibly the treatment effect 
D)  random error and the treatment effect

Question 18

In an ANOVA, rejection of the overall null hypothesis indicates that

Accepted Answer

A)  at least two population means differ 
B)  at least several population means differ from each other 
C)  at least some population means are equal 
D)  all population means differ from each other 
A)  at least two population means differ 
B)  at least several population means differ from each other 
C)  at least some population means are equal 
D)  all population means differ from each other

Question 19

The only reason treatment groups in a multiple-group experiment will differ from one another is due to differences in their treatments.

Accepted Answer

A) True 
 B)False

Question 20

In an experiment involving four different groups, each consisting of 5 subjects, the degrees of freedom for your treatment term equals

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  20 
A)  3 
B)  4 
C)  5 
D)  20

The advantage of comparing two kinds of treatment with a no-treatment group is

The construct validity of a simple experiment should be questioned, especially if it used

If an investigator explained the statistical analysis she performed on a design by saying she was dividing MS Between by MS Within, what, in fact, was she saying?

is the same as __ .

If you get a significant F in a five-group experiment, you should conduct post hoc tests to discover which groups are reliably different.

The random assignment of subjects to two or more experimental conditions produces groups that are

If you conducted an experiment with 6 groups and 50 participants, you would look in a F table under 6 and 44 degrees of freedom.

Within group variability is caused by which of the following?

If the null hypothesis is false, variability between groups reflects

In analysis of variance, differences between group means are represented by ____ variability.

Which of the following would be a source of between group variability?

The most common way to first analyze data from a multiple-group experiment is to compute an analysis of variance (ANOVA).

In an experiment involving four different groups, each consisting of 5 participants, the degrees of freedom for between groups equals

If an investigator explained the statistical analysis she performed on a design by saying she was dividing SS Between by SS Within, what, in fact, was she saying?

The F test is designed to see whether the differences between the group means are greater than would be expected by chance.

In a table that summarizes the results of an analysis of variance, the word "Within"might be replaced by

Regardless of whether the null hypothesis is true or false, variability within groups reflects

In an ANOVA, rejection of the overall null hypothesis indicates that

The only reason treatment groups in a multiple-group experiment will differ from one another is due to differences in their treatments.

In an experiment involving four different groups, each consisting of 5 subjects, the degrees of freedom for your treatment term equals

Psychology, Science, and You

Ethics and Validity

Generating Research Hypotheses

Reading and Evaluating Research

Measuring and Manipulating Variables: Reliability and Validity

Choosing the Best Measure for Your Study

Introduction to Descriptive Methods

Survey Research

Internal Validity

The Simple Experiment

Expanding the Simple Experiment: Factorial Designs

Within-Subjects Designs

Single-N Experiments and Quasi-Experiments

Writing Research Proposals and Reports

Appendix E: Using Theory to Generate Research Hypotheses

Filters

Exam 11: Expanding the Simple Experiment: The Multiple Group Experiment

The advantage of comparing two kinds of treatment with a no-treatment group is

The construct validity of a simple experiment should be questioned, especially if it used

If an investigator explained the statistical analysis she performed on a design by saying she was dividing MS Between by MS Within, what, in fact, was she saying?

______ is the same as ________ .

If you get a significant F in a five-group experiment, you should conduct post hoc tests to discover which groups are reliably different.

The random assignment of subjects to two or more experimental conditions produces groups that are

If you conducted an experiment with 6 groups and 50 participants, you would look in a F table under 6 and 44 degrees of freedom.

Within group variability is caused by which of the following?

If the null hypothesis is false, variability between groups reflects

In analysis of variance, differences between group means are represented by ____ variability.

Which of the following would be a source of between group variability?

The most common way to first analyze data from a multiple-group experiment is to compute an analysis of variance (ANOVA).

In an experiment involving four different groups, each consisting of 5 participants, the degrees of freedom for between groups equals

If an investigator explained the statistical analysis she performed on a design by saying she was dividing SS Between by SS Within, what, in fact, was she saying?

The F test is designed to see whether the differences between the group means are greater than would be expected by chance.

In a table that summarizes the results of an analysis of variance, the word "Within"might be replaced by

Regardless of whether the null hypothesis is true or false, variability within groups reflects

In an ANOVA, rejection of the overall null hypothesis indicates that

The only reason treatment groups in a multiple-group experiment will differ from one another is due to differences in their treatments.

In an experiment involving four different groups, each consisting of 5 subjects, the degrees of freedom for your treatment term equals

Psychology, Science, and You

Ethics and Validity

Generating Research Hypotheses

Reading and Evaluating Research

Measuring and Manipulating Variables: Reliability and Validity

Choosing the Best Measure for Your Study

Introduction to Descriptive Methods

Survey Research

Internal Validity

The Simple Experiment

Expanding the Simple Experiment: Factorial Designs

Within-Subjects Designs

Single-N Experiments and Quasi-Experiments

Writing Research Proposals and Reports

Appendix E: Using Theory to Generate Research Hypotheses

Filters

is the same as __ .