Question 1

Define interaction degrees of freedom (df interation ).

Accepted Answer

The term "interaction degrees of freedom

Question 2

In two-way ANOVA, the total sum of squares is partitioned into several different sums of squares. What are they?

Accepted Answer

In two-way ANOVA (Analysis of Variance),

Question 3

The variability of cell means is used as a basis of both the interaction effect and the within-cell variance estimate.

Accepted Answer

A) True 
 B)False

Question 4

To answer this question, refer to the following two-way ANOVA summary table   What is the value for ΣSwithin-cells ?

Accepted Answer

A)  160.4 
B)  260.4 
C)  250.4 
D)  150.4 
A)  160.4 
B)  260.4 
C)  250.4 
D)  150.4

Question 5

An assumption of two-way ANOVA is that the sample cell variances are equal.

Accepted Answer

A) True 
 B)False

Question 6

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

Accepted Answer

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

Question 7

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 row 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 8

In a two-way ANOVA, it is possible to have significant main effects without a significant interaction.

Accepted Answer

A) True 
 B)False

Question 9

Define interaction effect.

Accepted Answer

An interaction effect in statistics and

Question 10

A main effect refers to the average effect of the variable.

Accepted Answer

A) True 
 B)False

Question 11

A two factor experiment yields no more information than two single factor experiments.

Accepted Answer

A) True 
 B)False

Question 12

A main effect for variable A means that _________.

Accepted Answer

A)  the effect of variable A is the same over all levels of variable B 
B)  the effect of variable A is significant when averaged over all levels of variable B 
C)  the effect of variable A is not the same over all levels of variable B 
D)  variable A has a greater effect than variable B 
A)  the effect of variable A is the same over all levels of variable B 
B)  the effect of variable A is significant when averaged over all levels of variable B 
C)  the effect of variable A is not the same over all levels of variable B 
D)  variable A has a greater effect than variable B

Question 13

If there are no main effects, then _________.

Accepted Answer

A)  MScolumns / MSwithin-cells is less than F crit 
B)  MSrows / MSwithin-cells  is less than F crit 
C)  MSinteraction / MSwithin-cells is less than Fcrit 
D)  MScolumns / MSwithin-cells is less than F crit and MSrows / MSwithin-cells  is less than F crit 
A)  MScolumns / MSwithin-cells is less than F crit 
B)  MSrows / MSwithin-cells  is less than F crit 
C)  MSinteraction / MSwithin-cells is less than Fcrit 
D)  MScolumns / MSwithin-cells is less than F crit and MSrows / MSwithin-cells  is less than F crit

Question 14

What are the assumptions underlying two-way ANOVA?

Accepted Answer

Two-way ANOVA makes several assumptions

Question 15

In a two-way ANOVA, if there is a significant interaction between Factor A and Factor B , which of the following may be true?

Accepted Answer

A)  the effect of Factor A is not the same at all levels of Factor B 
B)  the effect of Factor B is not the same at all levels of Factor A 
C)  the effects of the two Factors do not differ across levels 
D)  the effect of Factor A is not the same at all levels of Factor B and/or The effect of Factor B is not the same at all levels of Factor A 
E)  need more information 
A)  the effect of Factor A is not the same at all levels of Factor B 
B)  the effect of Factor B is not the same at all levels of Factor A 
C)  the effects of the two Factors do not differ across levels 
D)  the effect of Factor A is not the same at all levels of Factor B and/or The effect of Factor B is not the same at all levels of Factor A 
E)  need more information

Question 16

A factorial experiment is one in which the effect of two or more factors is assessed in one experiment.

Accepted Answer

A) True 
 B)False

Question 17

The homogeneity of variance assumption assumes the population scores from which each of the samples are drawn are normally distributed.

Accepted Answer

A) True 
 B)False

Question 18

Fill in the blanks in the following table. There are 5 subjects per cell.   a. What are the null hypotheses for this experiment?
b. Using the two-way ANOVA with a = 0.05, what do you conclude?

Accepted Answer

The answer of Fill in the blanks in the following...

Question 19

It is not possible to have a significant interaction effect unless one of the variables also has a significant main effect.

Accepted Answer

A) True 
 B)False

Question 20

To answer this question, refer to the following two-way ANOVA summary table   What is the value of F obt for Rows?

Accepted Answer

A)  20.76 
B)  195.87 
C)  1.94 
D)  22.53 
A)  20.76 
B)  195.87 
C)  1.94 
D)  22.53

Define interaction degrees of freedom (df _interation ).

In two-way ANOVA, the total sum of squares is partitioned into several different sums of squares. What are they?

The variability of cell means is used as a basis of both the interaction effect and the within-cell variance estimate.

To answer this question, refer to the following two-way ANOVA summary table What is the value for ΣS_within-cells ?

An assumption of two-way ANOVA is that the sample cell variances are equal.

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

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 row effect is _________.

In a two-way ANOVA, it is possible to have significant main effects without a significant interaction.

Define interaction effect.

A main effect refers to the average effect of the variable.

A two factor experiment yields no more information than two single factor experiments.

A main effect for variable A means that _________.

If there are no main effects, then _________.

What are the assumptions underlying two-way ANOVA?

In a two-way ANOVA, if there is a significant interaction between Factor A and Factor B , which of the following may be true?

A factorial experiment is one in which the effect of two or more factors is assessed in one experiment.

The homogeneity of variance assumption assumes the population scores from which each of the samples are drawn are normally distributed.

Fill in the blanks in the following table. There are 5 subjects per cell. a. What are the null hypotheses for this experiment? b. Using the two-way ANOVA with a = 0.05, what do you conclude?

It is not possible to have a significant interaction effect unless one of the variables also has a significant main effect.

To answer this question, refer to the following two-way ANOVA summary table What is the value of F _obt for Rows?

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

Define interaction degrees of freedom (df interation ).

In two-way ANOVA, the total sum of squares is partitioned into several different sums of squares. What are they?

The variability of cell means is used as a basis of both the interaction effect and the within-cell variance estimate.

To answer this question, refer to the following two-way ANOVA summary table What is the value for ΣSwithin-cells ?

An assumption of two-way ANOVA is that the sample cell variances are equal.

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

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 row effect is _________.

In a two-way ANOVA, it is possible to have significant main effects without a significant interaction.

Define interaction effect.

A main effect refers to the average effect of the variable.

A two factor experiment yields no more information than two single factor experiments.

A main effect for variable A means that _________.

If there are no main effects, then _________.

What are the assumptions underlying two-way ANOVA?

In a two-way ANOVA, if there is a significant interaction between Factor A and Factor B , which of the following may be true?

A factorial experiment is one in which the effect of two or more factors is assessed in one experiment.

The homogeneity of variance assumption assumes the population scores from which each of the samples are drawn are normally distributed.

Fill in the blanks in the following table. There are 5 subjects per cell. a. What are the null hypotheses for this experiment? b. Using the two-way ANOVA with a = 0.05, what do you conclude?

It is not possible to have a significant interaction effect unless one of the variables also has a significant main effect.

To answer this question, refer to the following two-way ANOVA summary table What is the value of F obt for Rows?

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

Define interaction degrees of freedom (df _interation ).

To answer this question, refer to the following two-way ANOVA summary table What is the value for ΣS_within-cells ?

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 row effect is _________.

To answer this question, refer to the following two-way ANOVA summary table What is the value of F _obt for Rows?