Question 1

The sum of df rows , df columns , df interaction , and df within-cells  is N - 1.

Accepted Answer

A) True 
 B)False

Question 2

If the null hypothesis is correct, which of the following is (are) an estimate of s 2 ?

Accepted Answer

A)  MS  rows  
B)  MS  columns  
C)  MS  within-cells  
D)  MS  interaction  
E)  all of these 
A)  MS  rows  
B)  MS  columns  
C)  MS  within-cells  
D)  MS  interaction  
E)  all of these

Question 3

If the A variable has a real effect, _________.

Accepted Answer

A)  MScolumns / MSwithin-cells must equal or exceed F crit 
B)  MSrows / MSwithin-cells must equal or exceed F crit 
C)  it is possible that MScolumns / MSwithin-cells is less than F crit 
D)  it is possible that MSrows / MSwithin-cells is less than F crit 
A)  MScolumns / MSwithin-cells must equal or exceed F crit 
B)  MSrows / MSwithin-cells must equal or exceed F crit 
C)  it is possible that MScolumns / MSwithin-cells is less than F crit 
D)  it is possible that MSrows / MSwithin-cells is less than F crit

Question 4

The conclusion regarding the interaction is _________.

Accepted Answer

A)  retain H 0 ; chance is a reasonable explanation 
B)  accept H 0 ; chance is a reasonable explanation 
C)  reject H 0 ; there is a significant interaction between variables A and B 
D)  reject H 0 ; there is no interaction between variables A and B 
A)  retain H 0 ; chance is a reasonable explanation 
B)  accept H 0 ; chance is a reasonable explanation 
C)  reject H 0 ; there is a significant interaction between variables A and B 
D)  reject H 0 ; there is no interaction between variables A and B

Question 5

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05.   The value of F crit for evaluating the row effect is _________.

Accepted Answer

A)  3.40 
B)  7.82 
C)  4.26 
D)  5.61 
A)  3.40 
B)  7.82 
C)  4.26 
D)  5.61

Question 6

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05.   The value of F obt for evaluating the column effect is _________.

Accepted Answer

A)  0.66 
B)  6.23 
C)  0.29 
D)  5.28 
A)  0.66 
B)  6.23 
C)  0.29 
D)  5.28

Question 7

MSrows is sensitive to the effects of variable A .

Accepted Answer

A) True 
 B)False

Question 8

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05.   The conclusion regarding the main effect of variable A is _________.

Accepted Answer

A)  Retain H0 . We cannot conclude variable A has main effect. 
B)  Accept H0 . We cannot conclude variable A has main effect. 
C)  Reject H0 . Variable A has a significant main effect. 
D)  Reject H0 . Variable A has no effect. 
A)  Retain H0 . We cannot conclude variable A has main effect. 
B)  Accept H0 . We cannot conclude variable A has main effect. 
C)  Reject H0 . Variable A has a significant main effect. 
D)  Reject H0 . Variable A has no effect.

Question 9

MSwithin-cells is the standard for evaluating the main and interaction effects.

Accepted Answer

A) True 
 B)False

Question 10

ΣSw for one-way ANOVA and ΣSwithin-cells for two-way ANOVA are conceptually similar.

Accepted Answer

A) True 
 B)False

Question 11

An investigator collects the following data on variables A and B , using a two-way independent groups design. Use a = 0.05 in analyzing the data.   F crit for the A variable equals _________.

Accepted Answer

A)  3.40 
B)  7.82 
C)  5.81 
D)  4.26 
A)  3.40 
B)  7.82 
C)  5.81 
D)  4.26

Question 12

What are the advantages of two-way ANOVA as compared to one-way ANOVA?

Accepted Answer

Two-way ANOVA has several advantages ove

Question 13

If there is an interaction between the variables of "activity level" and "time of day," this means that activity level does not have the same effect at different times of day.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following increase(s) as the effect of the B variable increases?

Accepted Answer

A)  MS  rows  
B)  MS  columns  
C)  MS  within-cells  
D)  MS  interaction  
A)  MS  rows  
B)  MS  columns  
C)  MS  within-cells  
D)  MS  interaction

Question 15

Define interaction sum of squares ( SSinteraction ).

Accepted Answer

The interaction sum of squares, often de

Question 16

In general, when an experimenter does a two-way ANOVA, he has no interest in which levels of the variable have a real effect.

Accepted Answer

A) True 
 B)False

Question 17

The row variance estimate does not change as the effect of independent variable A increases.

Accepted Answer

A) True 
 B)False

Question 18

Consider the following graphic results from a 2 2 factorial experiment. These results show _________.

Accepted Answer

A)  there are no significant main effects or interaction effects 
B)  there is a significant main effect for factor A , no other significant effects 
C)  there is a significant main effect for factor B , no other significant effects 
D)  there is a significant interaction effect, no other significant effects 
A)  there are no significant main effects or interaction effects 
B)  there is a significant main effect for factor A , no other significant effects 
C)  there is a significant main effect for factor B , no other significant effects 
D)  there is a significant interaction effect, no other significant effects

Question 19

A "mean square" is the same thing as a "variance estimate".

Accepted Answer

A) True 
 B)False

Question 20

Differences among cell means are used to assess the interaction effect.

Accepted Answer

A) True 
 B)False

The sum of df _rows , df _columns , df _interaction , and df _within-cells is N - 1.

If the null hypothesis is correct, which of the following is (are) an estimate of s 2 ?

If the A variable has a real effect, _________.

The conclusion regarding the interaction is _________.

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05. The value of F _crit for evaluating the row effect is _________.

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05. The value of F _obt for evaluating the column effect is _________.

MS_rows is sensitive to the effects of variable A .

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05. The conclusion regarding the main effect of variable A is _________.

MS_within-cells is the standard for evaluating the main and interaction effects.

ΣS_w for one-way ANOVA and ΣS_within-cells for two-way ANOVA are conceptually similar.

An investigator collects the following data on variables A and B , using a two-way independent groups design. Use a = 0.05 in analyzing the data. F _crit for the A variable equals _________.

What are the advantages of two-way ANOVA as compared to one-way ANOVA?

If there is an interaction between the variables of "activity level" and "time of day," this means that activity level does not have the same effect at different times of day.

Which of the following increase(s) as the effect of the B variable increases?

Define interaction sum of squares ( SS_interaction ).

In general, when an experimenter does a two-way ANOVA, he has no interest in which levels of the variable have a real effect.

The row variance estimate does not change as the effect of independent variable A increases.

Consider the following graphic results from a 2 2 factorial experiment. These results show _________.

A "mean square" is the same thing as a "variance estimate".

Differences among cell means are used to assess the interaction effect.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Frequency Distributions

Measures of Central Tendency and Variability

The Normal Curve and Standard Scores

Correlation

Linear Regression

Random Sampling and Probability

Binomial Distribution

Introduction to Hypothesis Testing: Using the Sign Test

Power

Sampling Distributions, Sampling Distribution of the Mean: the Normal Deviate Z Test

Students T Test for Single Samples

Students T Test for Correlated and Independent Groups

Introduction to the Analysis of Variance

Chi-Square and Other Nonparametric Tests

Filters

Exam 16: Introduction to the Two-Way Analysis of Variance

The sum of df rows , df columns , df interaction , and df within-cells is N - 1.

If the null hypothesis is correct, which of the following is (are) an estimate of s 2 ?

If the A variable has a real effect, _________.

The conclusion regarding the interaction is _________.

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05. The value of F crit for evaluating the row effect is _________.

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05. The value of F obt for evaluating the column effect is _________.

MSrows is sensitive to the effects of variable A .

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05. The conclusion regarding the main effect of variable A is _________.

MSwithin-cells is the standard for evaluating the main and interaction effects.

ΣSw for one-way ANOVA and ΣSwithin-cells for two-way ANOVA are conceptually similar.

An investigator collects the following data on variables A and B , using a two-way independent groups design. Use a = 0.05 in analyzing the data. F crit for the A variable equals _________.

What are the advantages of two-way ANOVA as compared to one-way ANOVA?

If there is an interaction between the variables of "activity level" and "time of day," this means that activity level does not have the same effect at different times of day.

Which of the following increase(s) as the effect of the B variable increases?

Define interaction sum of squares ( SSinteraction ).

In general, when an experimenter does a two-way ANOVA, he has no interest in which levels of the variable have a real effect.

The row variance estimate does not change as the effect of independent variable A increases.

Consider the following graphic results from a 2 2 factorial experiment. These results show _________.

A "mean square" is the same thing as a "variance estimate".

Differences among cell means are used to assess the interaction effect.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Frequency Distributions

Measures of Central Tendency and Variability

The Normal Curve and Standard Scores

Correlation

Linear Regression

Random Sampling and Probability

Binomial Distribution

Introduction to Hypothesis Testing: Using the Sign Test

Power

Sampling Distributions, Sampling Distribution of the Mean: the Normal Deviate Z Test

Students T Test for Single Samples

Students T Test for Correlated and Independent Groups

Introduction to the Analysis of Variance

Chi-Square and Other Nonparametric Tests

Filters

The sum of df _rows , df _columns , df _interaction , and df _within-cells is N - 1.

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05. The value of F _crit for evaluating the row effect is _________.

Given the following data, collected from an independent groups design. When analyzing the data, assume that a = 0.05. The value of F _obt for evaluating the column effect is _________.

MS_rows is sensitive to the effects of variable A .

MS_within-cells is the standard for evaluating the main and interaction effects.

ΣS_w for one-way ANOVA and ΣS_within-cells for two-way ANOVA are conceptually similar.

An investigator collects the following data on variables A and B , using a two-way independent groups design. Use a = 0.05 in analyzing the data. F _crit for the A variable equals _________.

Define interaction sum of squares ( SS_interaction ).