Question 1

Which of the following is not an advantage of factorial designs over one-way designs?

Accepted Answer

A)  They allow for greater generalizability. 
B)  They allow us to test an interaction. 
C)  They make it easier to deal with unequal sample sizes. 
D)  They give us greater economy. 
A)  They allow for greater generalizability. 
B)  They allow us to test an interaction. 
C)  They make it easier to deal with unequal sample sizes. 
D)  They give us greater economy.

Question 2

In a factorial analysis of variance you cannot have

Accepted Answer

A)  both a significant interaction and a significant main effect. 
B)  two significant main effects. 
C)  a significant main effect and a nonsignificant interaction. 
D)  Any combination is possible. 
A)  both a significant interaction and a significant main effect. 
B)  two significant main effects. 
C)  a significant main effect and a nonsignificant interaction. 
D)  Any combination is possible.

Question 3

A simple effect is defined as

Accepted Answer

A)  part of the interaction. 
B)  the effect of one variable taken by itself. 
C)  the effect of one variable at a single level of the other variable. 
D)  the difference between the row effect and the column effect. 
A)  part of the interaction. 
B)  the effect of one variable taken by itself. 
C)  the effect of one variable at a single level of the other variable. 
D)  the difference between the row effect and the column effect.

Question 4

Use the following ANOVA summary table to answer the following four questions:
 
The summary table suggests which of the following conclusions?

Accepted Answer

A)  a main effect of gender 
B)  a main effect of group 
C)  an interaction of gender × group 
D)  all of the above 
A)  a main effect of gender 
B)  a main effect of group 
C)  an interaction of gender × group 
D)  all of the above

Question 5

Use the following ANOVA summary table to answer the following four questions:
 
What does the significant F for Group most likely mean?

Accepted Answer

A)  All the groups are different from each other. 
B)  None of the groups are different from each other. 
C)  The study has problems with control. 
D)  There is at least one significant difference among the groups. 
A)  All the groups are different from each other. 
B)  None of the groups are different from each other. 
C)  The study has problems with control. 
D)  There is at least one significant difference among the groups.

Question 6

A human resources director for a large company wanted to compare salaries based on minority status and the type of job.   Answer the following questions based on the following SPSS output. 
  
-Calculate and explain η2 for the significant effects from the previous data.

Accepted Answer

η ² = .037 for job category and .001 for

Question 7

In the three graphs below, which one is most likely to have a main effect for quarters (the variable that increases along the X axis)?
 
​

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  none. 
A)  I 
B)  II 
C)  III 
D)  none.

Question 8

In the Spilich et al. study of the effects of smoking that was discussed in the text, active smokers were found to do better than nonsmokers on a driving task but did worse than nonsmokers on a cognitive task. However, over all three tasks (the third was pattern recognition and the groups were not different on that) active smokers did not differ from nonsmokers on performance. The results suggest

Accepted Answer

A)  an interaction between smoke group and task, and a main effect for smoke group. 
B)  an interaction between smoke group and task, but no main effect for smoke group. 
C)  a main effect for smoke group, but no interaction between smoke group and task. 
D)  a main effect for task only. 
A)  an interaction between smoke group and task, and a main effect for smoke group. 
B)  an interaction between smoke group and task, but no main effect for smoke group. 
C)  a main effect for smoke group, but no interaction between smoke group and task. 
D)  a main effect for task only.

Question 9

The degrees of freedom for an interaction in a two-way factorial are equal to

Accepted Answer

A)  the degrees of freedom for the main effects. 
B)  the sum of the degrees of freedom for the main effects. 
C)  the product of the degrees of freedom for the main effects. 
D)  6. 
A)  the degrees of freedom for the main effects. 
B)  the sum of the degrees of freedom for the main effects. 
C)  the product of the degrees of freedom for the main effects. 
D)  6.

Question 10

In a study which investigated the effects of amount of coffee consumption and mood (good or bad) on driving speed, the magnitude of effects estimates were as follows: Coffee:
  ; Mood:
  ; Coffee × Mood:
  . Together, how much of the variability in driving speed is accounted for by Coffee, Mood, and their interaction?

Accepted Answer

A)  cannot determine 
B)  .49 
C)  .51 
D)  .19 
A)  cannot determine 
B)  .49 
C)  .51 
D)  .19

Question 11

The mean difference in GPA based on gender is an interaction effect.

Accepted Answer

A) True 
 B)False

Question 12

A doctor examining the effectiveness of smoking cessation programs wanted to examine the independent and joint effect of a support group and the patch. The following data are the average number of packs smoked 2 weeks after the interventions. Each group consisted of 10 people. Answer the following questions based on this table of means. 
   
a. What is the grand mean? 
b. Calculate the mean packs smoked at each level of support group. 
c. Calculate the mean packs smokes at each level of the patch.

Accepted Answer

a. 1.75 
b

Question 13

The notation   ... stands for

Accepted Answer

A)  the mean of any row. 
B)  the mean of any column. 
C)  the mean of any cell. 
D)  the grand mean. 
A)  the mean of any row. 
B)  the mean of any column. 
C)  the mean of any cell. 
D)  the grand mean.

Question 14

A researcher noted that there was a significant interaction effect of amount of time studying and hours of sleep the night before an exam on exam scores. He calculated simple effects to try to interpret the data. Here are the results. Graph them and explain the nature of the interaction.

Accepted Answer

There is a significant difference in exa

Question 15

-Plot the data from the previous question three times (each main effect and the interaction effect); interpret the graphs.

Accepted Answer

The graphs suggest that there are main e

Question 16

If ω2 is calculated to yield the magnitude of effect estimates instead of η2 for a particular experiment, the ω2 estimates would probably be

Accepted Answer

A)  higher and more biased. 
B)  higher and less biased. 
C)  lower and more biased. 
D)  lower and less biased. 
A)  higher and more biased. 
B)  higher and less biased. 
C)  lower and more biased. 
D)  lower and less biased.

Question 17

The following is a printout from SPSS.
 
From this table, which of the following conclusions would be wrong?

Accepted Answer

A)  There is a significant effect for Groups. 
B)  There is a significant effect for Education. 
C)  The interaction is significant. 
D)  Both main effects are significant. 
A)  There is a significant effect for Groups. 
B)  There is a significant effect for Education. 
C)  The interaction is significant. 
D)  Both main effects are significant.

Question 18

A human resources director for a large company wanted to compare salaries based on minority status and the type of job.   Answer the following questions based on the following SPSS output. 
  
-a. How many levels are there for each factor? 
b. Which effects are statistically significant?

Accepted Answer

a. Minority status has 2 level

Question 19

_______ are the effect of one variable at one level of the other variable.

Accepted Answer

A)  simple effects 
B)  main effects 
C)  interactions 
D)  relationships 
A)  simple effects 
B)  main effects 
C)  interactions 
D)  relationships

Question 20

A 2 × 4 factorial has

Accepted Answer

A)  8 subjects. 
B)  2 levels of one variable and 4 levels of the other. 
C)  8 factors. 
D)  one variable with 4 levels and 2 subjects. 
A)  8 subjects. 
B)  2 levels of one variable and 4 levels of the other. 
C)  8 factors. 
D)  one variable with 4 levels and 2 subjects.

Which of the following is not an advantage of factorial designs over one-way designs?

In a factorial analysis of variance you cannot have

A simple effect is defined as

Use the following ANOVA summary table to answer the following four questions: The summary table suggests which of the following conclusions?

Use the following ANOVA summary table to answer the following four questions: What does the significant F for Group most likely mean?

A human resources director for a large company wanted to compare salaries based on minority status and the type of job. Answer the following questions based on the following SPSS output. -Calculate and explain η² for the significant effects from the previous data.

In the three graphs below, which one is most likely to have a main effect for quarters (the variable that increases along the X axis)?

The degrees of freedom for an interaction in a two-way factorial are equal to

The mean difference in GPA based on gender is an interaction effect.

The notation ... stands for

A researcher noted that there was a significant interaction effect of amount of time studying and hours of sleep the night before an exam on exam scores. He calculated simple effects to try to interpret the data. Here are the results. Graph them and explain the nature of the interaction.

-Plot the data from the previous question three times (each main effect and the interaction effect); interpret the graphs.

If ω² is calculated to yield the magnitude of effect estimates instead of η² for a particular experiment, the ω² estimates would probably be

The following is a printout from SPSS. From this table, which of the following conclusions would be wrong?

A human resources director for a large company wanted to compare salaries based on minority status and the type of job. Answer the following questions based on the following SPSS output. -a. How many levels are there for each factor? b. Which effects are statistically significant?

_______ are the effect of one variable at one level of the other variable.

A 2 × 4 factorial has

Introduction

Basic Concepts

Displaying Data

Measures of Central Tendency

Measures of Variability

The Normal Distribution

Basic Concepts of Probability

Sampling Distributions and Hypothesis Testing

Correlation

Regression

Multiple Regression

Hypothesis Tests Applied to Means: One Sample

Hypothesis Tests Applied to Means: Two Related Samples

Hypothesis Tests Applied to Means: Two Independent Samples

Power

One-Way Analysis of Variance

Repeated-Measures Analysis of Variance

Chi-Square

Nonparametric and Resampling Statistical Tests

Meta-Analysis

Filters

Exam 17: Factorial Analysis of Variance

Which of the following is not an advantage of factorial designs over one-way designs?

In a factorial analysis of variance you cannot have

A simple effect is defined as

Use the following ANOVA summary table to answer the following four questions: The summary table suggests which of the following conclusions?

Use the following ANOVA summary table to answer the following four questions: What does the significant F for Group most likely mean?

A human resources director for a large company wanted to compare salaries based on minority status and the type of job. Answer the following questions based on the following SPSS output. -Calculate and explain η2 for the significant effects from the previous data.

In the three graphs below, which one is most likely to have a main effect for quarters (the variable that increases along the X axis)? ​

The degrees of freedom for an interaction in a two-way factorial are equal to

The mean difference in GPA based on gender is an interaction effect.

The notation ... stands for

A researcher noted that there was a significant interaction effect of amount of time studying and hours of sleep the night before an exam on exam scores. He calculated simple effects to try to interpret the data. Here are the results. Graph them and explain the nature of the interaction.

-Plot the data from the previous question three times (each main effect and the interaction effect); interpret the graphs.

If ω2 is calculated to yield the magnitude of effect estimates instead of η2 for a particular experiment, the ω2 estimates would probably be

The following is a printout from SPSS. From this table, which of the following conclusions would be wrong?

A human resources director for a large company wanted to compare salaries based on minority status and the type of job. Answer the following questions based on the following SPSS output. -a. How many levels are there for each factor? b. Which effects are statistically significant?

_______ are the effect of one variable at one level of the other variable.

A 2 × 4 factorial has

Introduction

Basic Concepts

Displaying Data

Measures of Central Tendency

Measures of Variability

The Normal Distribution

Basic Concepts of Probability

Sampling Distributions and Hypothesis Testing

Correlation

Regression

Multiple Regression

Hypothesis Tests Applied to Means: One Sample

Hypothesis Tests Applied to Means: Two Related Samples

Hypothesis Tests Applied to Means: Two Independent Samples

Power

One-Way Analysis of Variance

Repeated-Measures Analysis of Variance

Chi-Square

Nonparametric and Resampling Statistical Tests

Meta-Analysis

Filters

A human resources director for a large company wanted to compare salaries based on minority status and the type of job. Answer the following questions based on the following SPSS output. -Calculate and explain η² for the significant effects from the previous data.

In the three graphs below, which one is most likely to have a main effect for quarters (the variable that increases along the X axis)?

If ω² is calculated to yield the magnitude of effect estimates instead of η² for a particular experiment, the ω² estimates would probably be