Question 1

If the means from a two-factor study are displayed in a graph,how can you determine whether there is an interaction between factors?​

Accepted Answer

​When the means of a two-factor study ar...

Question 2

In a two-factor experiment,an interaction can distort the main effects of either or both factors.​

Accepted Answer

A) True 
 B)False

Question 3

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data?
​ A1 A2
​
​
B1
​
M = 20
​
M = 40
​
B2
​
M = 20
​
M = 40

Accepted Answer

A)  ​main effects for both factors and an interaction
B)  ​main effects for both factors and no interaction
C)  a main effect for factor A, no main effect for factor B, and no interaction
D)  ​a main effect for factor A and an interaction but no main effect for factor B

Question 4

A clinician claims that the effectiveness of a new treatment varies depending on the gender of the client.Specifically,the new treatment has been shown to be very effective for females,but the treatment has little or no effect for males.In this example,____.

Accepted Answer

A)  ​there is an interaction between the treatment and client's gender
B)  ​there is no interaction between the treatment and client's gender
C)  there is no main effect of treatment
D)  ​there is no main effect of gender

Question 5

How many main effects are there in a 2x3 factorial design?​

Accepted Answer

A)  ​two
B)  ​three
C)  six
D)  ​nine

Question 6

What statistical technique should be used to evaluate the results from a pre-post control group design?

Accepted Answer

A)  ​a two-factor repeated-measures ANOVA
B)  ​a two-factor independent-measures ANOVA
C)  a two-factor mixed design
D)  ​a t-test

Question 7

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data?
​ A1 A2
​
​
B1
​
M = 20
​
M = 20
​
B2
​
M = 30
​
M = 50

Accepted Answer

A)  ​main effects for both factors and an interaction
B)  ​main effects for both factors and no interaction
C)  a main effect for factor A, no main effect for factor B, and no interaction
D)  ​a main effect for factor A and an interaction but no main effect for factor B

Question 8

In a factorial design,an interaction between the factors occurs whenever ____.​

Accepted Answer

A)  ​the mean differences between the cells are not explained by the main effects
B)  ​the mean differences between the cells are explained by the main effects
C)  there are differences between the overall column means
D)  ​there are differences between the overall row means

Question 9

A factorial study measures allergy symptoms before and after taking medication for a group taking the real medication and a control group taking a placebo.What kind of design is being used?

Accepted Answer

A)  ​between-subjects design
B)  ​within-subjects design
C)  repeated measures design
D)  ​mixed design D

Question 10

In a two-factor study,it is possible to have one experimental factor and one nonexperimental factor.​

Accepted Answer

A) True 
 B)False

Question 11

In a two-factor experiment with two levels of factor A and 2 levels of factor B,three of the treatment means are essentially identical and one is substantially different from the others.What result(s) would be produced by this pattern of treatment means?

Accepted Answer

A)  ​a main effect for factor A only
B)  ​a main effect for factor B only
C)  an interaction between A and B
D)  ​main effects for both A and B, and an interaction

Question 12

How can variance be reduced in a between-subjects design?​

Accepted Answer

A)  ​Use counterbalancing.
B)  ​Use a factorial design adding a participant variable (such as age)  as a second factor.
C)  Use a factorial design with the order of treatments as a second factor
D)  ​Reduce the strength of the treatment.

Question 13

A factorial study compares the effectiveness of two allergy medications by measuring symptoms immediately before taking the medication,30 minutes after the medication,and 3 hours after the medication.Half of the participants take one of the medications and the rest take the second medication.Which statement accurately describes this study?

Accepted Answer

A)  It is a between-subjects design that uses both the experimental and non-experimental strategies.
B)  ​It is a between-subjects experiment.
C)  It is a non-experimental between-subjects design.
D)  It combines between- and within-subjects designs and uses both the experimental and non-experimental strategies. D

Question 14

A graph of a two-factor study indicates an interaction when the lines on the graph ____.​

Accepted Answer

A)  ​are parallel
B)  ​cross or converge
C)  are steep in slope
D)  ​have the same slope

Question 15

In a two-factor design,there are two separate interactions.

Accepted Answer

A) True 
 B)False

Question 16

A two-factor study compares the effectiveness of two different treatments (factor 1)by measuring performance before treatment,immediately after treatment,and 3 months after treatment (factor 2)for each participant.Half of the participants are randomly assigned to treatment A and half to treatment B.The results from this study should be evaluated with an independent-measures two-factor analysis of variance.​

Accepted Answer

A) True 
 B)False  False

Question 17

A two-factor experimental design evaluates two main effects and one interaction.

Accepted Answer

A) True 
 B)False

Question 18

What is the primary limitation of using only two levels of a factor in a two-factor between-subjects design?​

Accepted Answer

A)  ​It is simple to interpret.
B)  ​It increases the chances of demonstrating a significant mean difference.
C)  It tends to reduce the differences between the groups.
D)  ​It may not provide a complete picture of how the factor affects the dependent variable.

Question 19

When the means for a two-factor study are displayed in a graph and the lines in the graph are perfectly parallel,what can you conclude about the main effects and interaction?

Accepted Answer

A)  ​There is no main effect for either of the two factors.
B)  ​There is a main effect for both of the two factors.
C)  There is no interaction between factors.
D)  ​There are no main effects and no interaction between factors.

Question 20

In a 3x4 factorial design there are ____ main effect(s) and ____ interaction(s) possible.

Accepted Answer

A)  ​three; four
B)  ​two; three
C)  two; one
D)  ​one; two

Exam 11: Factorial Designs.

If the means from a two-factor study are displayed in a graph,how can you determine whether there is an interaction between factors?

Correct Answer
verified
When the means of a two-factor study ar...
View Answer

In a two-factor experiment,an interaction can distort the main effects of either or both factors.

Correct Answer
verified

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data? A1 A2 B1 M = 20 M = 40 B2 M = 20 M = 40

Correct Answer
verified

A clinician claims that the effectiveness of a new treatment varies depending on the gender of the client.Specifically,the new treatment has been shown to be very effective for females,but the treatment has little or no effect for males.In this example,____.

Correct Answer
verified

How many main effects are there in a 2x3 factorial design?

Correct Answer
verified

What statistical technique should be used to evaluate the results from a pre-post control group design?

Correct Answer
verified

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data? A1 A2 B1 M = 20 M = 20 B2 M = 30 M = 50

Correct Answer
verified

In a factorial design,an interaction between the factors occurs whenever ____.

Correct Answer
verified

A factorial study measures allergy symptoms before and after taking medication for a group taking the real medication and a control group taking a placebo.What kind of design is being used?

Correct Answer
verified
D

In a two-factor study,it is possible to have one experimental factor and one nonexperimental factor.

Correct Answer
verified

In a two-factor experiment with two levels of factor A and 2 levels of factor B,three of the treatment means are essentially identical and one is substantially different from the others.What result(s) would be produced by this pattern of treatment means?

Correct Answer
verified

How can variance be reduced in a between-subjects design?

Correct Answer
verified

Correct Answer
verified
D

A graph of a two-factor study indicates an interaction when the lines on the graph ____.

Correct Answer
verified

In a two-factor design,there are two separate interactions.

Correct Answer
verified

Correct Answer
verified
False

A two-factor experimental design evaluates two main effects and one interaction.

Correct Answer
verified

What is the primary limitation of using only two levels of a factor in a two-factor between-subjects design?

Correct Answer
verified

When the means for a two-factor study are displayed in a graph and the lines in the graph are perfectly parallel,what can you conclude about the main effects and interaction?

Correct Answer
verified

In a 3x4 factorial design there are main effect(s) and interaction(s) possible.

Correct Answer
verified

Exam 11: Factorial Designs.

If the means from a two-factor study are displayed in a graph,how can you determine whether there is an interaction between factors?​

Correct Answerverified​When the means of a two-factor study ar...View AnswerShow Answer

In a two-factor experiment,an interaction can distort the main effects of either or both factors.​

Correct AnswerverifiedShow Answer

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data? ​ A1 A2 ​ ​ B1 ​ M = 20 ​ M = 40 ​ B2 ​ M = 20 ​ M = 40

Correct AnswerverifiedShow Answer

A clinician claims that the effectiveness of a new treatment varies depending on the gender of the client.Specifically,the new treatment has been shown to be very effective for females,but the treatment has little or no effect for males.In this example,____.

Correct AnswerverifiedShow Answer

How many main effects are there in a 2x3 factorial design?​

Correct AnswerverifiedShow Answer

What statistical technique should be used to evaluate the results from a pre-post control group design?

Correct AnswerverifiedShow Answer

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data? ​ A1 A2 ​ ​ B1 ​ M = 20 ​ M = 20 ​ B2 ​ M = 30 ​ M = 50

Correct AnswerverifiedShow Answer

In a factorial design,an interaction between the factors occurs whenever ____.​

Correct AnswerverifiedShow Answer

A factorial study measures allergy symptoms before and after taking medication for a group taking the real medication and a control group taking a placebo.What kind of design is being used?

Correct AnswerverifiedD

In a two-factor study,it is possible to have one experimental factor and one nonexperimental factor.​

Correct AnswerverifiedShow Answer

In a two-factor experiment with two levels of factor A and 2 levels of factor B,three of the treatment means are essentially identical and one is substantially different from the others.What result(s) would be produced by this pattern of treatment means?

Correct AnswerverifiedShow Answer

How can variance be reduced in a between-subjects design?​

Correct AnswerverifiedShow Answer

Correct AnswerverifiedD

A graph of a two-factor study indicates an interaction when the lines on the graph ____.​

Correct AnswerverifiedShow Answer

In a two-factor design,there are two separate interactions.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedFalse

A two-factor experimental design evaluates two main effects and one interaction.

Correct AnswerverifiedShow Answer

What is the primary limitation of using only two levels of a factor in a two-factor between-subjects design?​

Correct AnswerverifiedShow Answer

When the means for a two-factor study are displayed in a graph and the lines in the graph are perfectly parallel,what can you conclude about the main effects and interaction?

Correct AnswerverifiedShow Answer

In a 3x4 factorial design there are ____ main effect(s) and ____ interaction(s) possible.

Correct AnswerverifiedShow Answer

If the means from a two-factor study are displayed in a graph,how can you determine whether there is an interaction between factors?

Correct Answer
verified
When the means of a two-factor study ar...
View Answer

In a two-factor experiment,an interaction can distort the main effects of either or both factors.

Correct Answer
verified

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data? A1 A2 B1 M = 20 M = 40 B2 M = 20 M = 40

Correct Answer
verified

Correct Answer
verified

How many main effects are there in a 2x3 factorial design?

Correct Answer
verified

Correct Answer
verified

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data? A1 A2 B1 M = 20 M = 20 B2 M = 30 M = 50

Correct Answer
verified

In a factorial design,an interaction between the factors occurs whenever ____.

Correct Answer
verified

Correct Answer
verified
D

In a two-factor study,it is possible to have one experimental factor and one nonexperimental factor.

Correct Answer
verified

Correct Answer
verified

How can variance be reduced in a between-subjects design?

Correct Answer
verified

Correct Answer
verified
D

A graph of a two-factor study indicates an interaction when the lines on the graph ____.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
False

Correct Answer
verified

What is the primary limitation of using only two levels of a factor in a two-factor between-subjects design?

Correct Answer
verified

Correct Answer
verified

In a 3x4 factorial design there are main effect(s) and interaction(s) possible.

Correct Answer
verified