Question 1

A simple main effect test is appropriate for analyzing which significant result?

Accepted Answer

A)  a significant main effect, where k = 2 
B)  a significant main effect, where k > 2 
C)  a significant interaction 
D)  all of these 
A)  a significant main effect, where k = 2 
B)  a significant main effect, where k > 2 
C)  a significant interaction 
D)  all of these

Question 2

A researcher computes a 2 *  3 between-subjects ANOVA test in which 11 participants were observed in each condition.If F = 5.20 for both main effect tests and the A *  B interaction test,then the decision for each test

Accepted Answer

A)  will be significant for both main effects and the A *  B interaction 
B)  will be significant for Factor A, but not Factor B 
C)  will be significant for Factor B and the A * B interaction 
D)  there is not enough information to answer this question 
A)  will be significant for both main effects and the A *  B interaction 
B)  will be significant for Factor A, but not Factor B 
C)  will be significant for Factor B and the A * B interaction 
D)  there is not enough information to answer this question

Question 3

The following is a summary of a significant interaction for a two-way ANOVA: F(2,30)= 2.04,p 2 = .15).Assuming the test statistic value is correct,then which of the following must be incorrect in this report?

Accepted Answer

A)  the effect size 
B)  the degrees of freedom 
C)  the p value 
D)  the test statistic 
A)  the effect size 
B)  the degrees of freedom 
C)  the p value 
D)  the test statistic

Question 4

Simple main effect tests are used to analyze a significant interaction by comparing the mean differences of one factor at each level of a second factor.

Accepted Answer

A) True 
 B)False

Question 5

Using a two-way between-subjects ANOVA,we compute hypothesis tests for two main effects and one interaction.

Accepted Answer

A) True 
 B)False

Question 6

The assumptions for a two-way between-subjects ANOVA apply only to main effect tests,and not the interaction test.

Accepted Answer

A) True 
 B)False

Question 7

If an interaction and a main effect are significant for a two-way between-subjects ANOVA,then the main effect must be analyzed first.

Accepted Answer

A) True 
 B)False

Question 8

A researcher randomly assigns different participants to each combination of levels for two factors.In this example,a two-way between-subjects ANOVA is appropriate to analyze the data.

Accepted Answer

A) True 
 B)False

Question 9

There are ______ cells or groups in a 3 * 4 ANOVA design.

Accepted Answer

A)  3 
B)  4 
C)  7 
D)  12 
A)  3 
B)  4 
C)  7 
D)  12

Question 10

It is inappropriate to compute effect size for interactions and main effects.

Accepted Answer

A) True 
 B)False

Question 11

A researcher records the amount of time spent studying by male and female college students in a dormitory versus a library setting.Different participants were observed in each group.What type of statistical design is appropriate for this study?

Accepted Answer

A)  one-way between-subjects ANOVA 
B)  one-way within-subjects ANOVA 
C)  two-way between-subjects ANOVA 
D)  one-way within-subjects ANOVA and two-way between-subjects ANOVA 
A)  one-way between-subjects ANOVA 
B)  one-way within-subjects ANOVA 
C)  two-way between-subjects ANOVA 
D)  one-way within-subjects ANOVA and two-way between-subjects ANOVA

Question 12

Which of the following hypotheses identifies a prediction that requires that two factors we observed in the same statistical design?

Accepted Answer

A)  Eating slowly will reduce total caloric intake during a meal. 
B)  Mood will improve most when people consume foods that are high in sugar and fat. 
C)  Intense exercise will increase cravings for high calorie foods. 
D)  The closer a food is to a participant, the more of that food they will consume. 
A)  Eating slowly will reduce total caloric intake during a meal. 
B)  Mood will improve most when people consume foods that are high in sugar and fat. 
C)  Intense exercise will increase cravings for high calorie foods. 
D)  The closer a food is to a participant, the more of that food they will consume.

Question 13

A researcher computes a 3 * 4 between-subjects ANOVA and finds one significant main effect and a significant interaction.What is typically the next appropriate step?

Accepted Answer

A)  compute pairwise comparisons for the main effect 
B)  compute simple main effect tests for the main effect 
C)  compute pairwise comparisons for the interaction 
D)  compute simple main effect tests for the interaction 
A)  compute pairwise comparisons for the main effect 
B)  compute simple main effect tests for the main effect 
C)  compute pairwise comparisons for the interaction 
D)  compute simple main effect tests for the interaction

Question 14

A researcher computes two 2* 2 between-subjects ANOVAs.In Study 1,he observes eight participants in each cell; in Study 2,he observes 12 participants in each cell.Which study is associated with a larger value for degrees of freedom for the A *  B interaction?

Accepted Answer

A)  Study 1 
B)  Study 2 
C)  both studies have the same degrees of freedom for the A * B interaction 
A)  Study 1 
B)  Study 2 
C)  both studies have the same degrees of freedom for the A * B interaction

Question 15

Using an A * B ANOVA,a researcher concludes that Factor A is significant,independent of Factor B. In this study, this researcher found a significant ______.

Accepted Answer

A)  main effect of Factor A 
B)  main effect of Factor B 
C)  A * B interaction 
D)  post hoc test 
A)  main effect of Factor A 
B)  main effect of Factor B 
C)  A * B interaction 
D)  post hoc test

Question 16

A significant interaction indicates that at least one pair of cell means significantly differs.

Accepted Answer

A) True 
 B)False

Question 17

An A * B interaction is associated with 2 degrees of freedom in a 2 * 3 between-subjects ANOVA design.

Accepted Answer

A) True 
 B)False

Question 18

$\eta$2 is a more powerful estimate of effect size than R2.

Accepted Answer

A) True 
 B)False

Question 19

A professor compares the exam grades of students based on whether they have a learning disability (yes,no)and where they sit in the classroom (in the front,middle,or back row).Different participants were observed in each group.What type of statistical design is appropriate for this study?

Accepted Answer

A)  one-way between-subjects ANOVA 
B)  one-way within-subjects ANOVA 
C)  two-way between-subjects ANOVA 
D)  one-way within-subjects ANOVA and two-way between-subjects ANOVA 
A)  one-way between-subjects ANOVA 
B)  one-way within-subjects ANOVA 
C)  two-way between-subjects ANOVA 
D)  one-way within-subjects ANOVA and two-way between-subjects ANOVA

Question 20

If a study has 12 groups,then it is possible that the degrees of freedom for each factor are 2 and 3 degrees of freedom for a two-way between-subjects ANOVA.

Accepted Answer

A) True 
 B)False

A simple main effect test is appropriate for analyzing which significant result?

A researcher computes a 2 * 3 between-subjects ANOVA test in which 11 participants were observed in each condition.If F = 5.20 for both main effect tests and the A * B interaction test,then the decision for each test

The following is a summary of a significant interaction for a two-way ANOVA: F(2,30)= 2.04,p < .05 ( $\eta$ ² = .15).Assuming the test statistic value is correct,then which of the following must be incorrect in this report?

Simple main effect tests are used to analyze a significant interaction by comparing the mean differences of one factor at each level of a second factor.

Using a two-way between-subjects ANOVA,we compute hypothesis tests for two main effects and one interaction.

The assumptions for a two-way between-subjects ANOVA apply only to main effect tests,and not the interaction test.

If an interaction and a main effect are significant for a two-way between-subjects ANOVA,then the main effect must be analyzed first.

A researcher randomly assigns different participants to each combination of levels for two factors.In this example,a two-way between-subjects ANOVA is appropriate to analyze the data.

There are ______ cells or groups in a 3 * 4 ANOVA design.

It is inappropriate to compute effect size for interactions and main effects.

A researcher records the amount of time spent studying by male and female college students in a dormitory versus a library setting.Different participants were observed in each group.What type of statistical design is appropriate for this study?

Which of the following hypotheses identifies a prediction that requires that two factors we observed in the same statistical design?

A researcher computes a 3 * 4 between-subjects ANOVA and finds one significant main effect and a significant interaction.What is typically the next appropriate step?

A researcher computes two 2* 2 between-subjects ANOVAs.In Study 1,he observes eight participants in each cell; in Study 2,he observes 12 participants in each cell.Which study is associated with a larger value for degrees of freedom for the A * B interaction?

Using an A * B ANOVA,a researcher concludes that Factor A is significant,independent of Factor B. In this study, this researcher found a significant ______.

A significant interaction indicates that at least one pair of cell means significantly differs.

An A * B interaction is associated with 2 degrees of freedom in a 2 * 3 between-subjects ANOVA design.

$\eta$ ² is a more powerful estimate of effect size than R².

A professor compares the exam grades of students based on whether they have a learning disability (yes,no)and where they sit in the classroom (in the front,middle,or back row).Different participants were observed in each group.What type of statistical design is appropriate for this study?

If a study has 12 groups,then it is possible that the degrees of freedom for each factor are 2 and 3 degrees of freedom for a two-way between-subjects ANOVA.

Introduction to Statistics

Summarizing Data: Frequency Distributions in Tables and Graphs

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability

Probability, normal Distributions, and Z Scores

Probability and Sampling Distributions

Hypothesis Testing: Significance,effect Size,and Power

Testing Means: One-Sample and Two-Independent-Sample T Tests

Testing Means: Truehe Related-Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Between-Subjects Design

Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign

Correlation

Linear Regression and Multiple Regression

Nonparametric Tests: Chi-Square Tests

Nonparametric Tests: Tests for Ordinal Data

Filters

Exam 14: Analysis of Variance: Two-Way Between-Subjects Factorial Design

A simple main effect test is appropriate for analyzing which significant result?

A researcher computes a 2 * 3 between-subjects ANOVA test in which 11 participants were observed in each condition.If F = 5.20 for both main effect tests and the A * B interaction test,then the decision for each test

The following is a summary of a significant interaction for a two-way ANOVA: F(2,30)= 2.04,p < .05 ( η\etaη 2 = .15).Assuming the test statistic value is correct,then which of the following must be incorrect in this report?

Simple main effect tests are used to analyze a significant interaction by comparing the mean differences of one factor at each level of a second factor.

Using a two-way between-subjects ANOVA,we compute hypothesis tests for two main effects and one interaction.

The assumptions for a two-way between-subjects ANOVA apply only to main effect tests,and not the interaction test.

If an interaction and a main effect are significant for a two-way between-subjects ANOVA,then the main effect must be analyzed first.

A researcher randomly assigns different participants to each combination of levels for two factors.In this example,a two-way between-subjects ANOVA is appropriate to analyze the data.

There are ______ cells or groups in a 3 * 4 ANOVA design.

It is inappropriate to compute effect size for interactions and main effects.

A researcher records the amount of time spent studying by male and female college students in a dormitory versus a library setting.Different participants were observed in each group.What type of statistical design is appropriate for this study?

Which of the following hypotheses identifies a prediction that requires that two factors we observed in the same statistical design?

A researcher computes a 3 * 4 between-subjects ANOVA and finds one significant main effect and a significant interaction.What is typically the next appropriate step?

A researcher computes two 2* 2 between-subjects ANOVAs.In Study 1,he observes eight participants in each cell; in Study 2,he observes 12 participants in each cell.Which study is associated with a larger value for degrees of freedom for the A * B interaction?

Using an A * B ANOVA,a researcher concludes that Factor A is significant,independent of Factor B. In this study, this researcher found a significant ______.

A significant interaction indicates that at least one pair of cell means significantly differs.

An A * B interaction is associated with 2 degrees of freedom in a 2 * 3 between-subjects ANOVA design.

η\etaη 2 is a more powerful estimate of effect size than R2.

A professor compares the exam grades of students based on whether they have a learning disability (yes,no)and where they sit in the classroom (in the front,middle,or back row).Different participants were observed in each group.What type of statistical design is appropriate for this study?

If a study has 12 groups,then it is possible that the degrees of freedom for each factor are 2 and 3 degrees of freedom for a two-way between-subjects ANOVA.

Introduction to Statistics

Summarizing Data: Frequency Distributions in Tables and Graphs

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability

Probability, normal Distributions, and Z Scores

Probability and Sampling Distributions

Hypothesis Testing: Significance,effect Size,and Power

Testing Means: One-Sample and Two-Independent-Sample T Tests

Testing Means: Truehe Related-Samples T Test

Estimation and Confidence Intervals

Analysis of Variance: One-Way Between-Subjects Design

Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign

Correlation

Linear Regression and Multiple Regression

Nonparametric Tests: Chi-Square Tests

Nonparametric Tests: Tests for Ordinal Data

Filters

The following is a summary of a significant interaction for a two-way ANOVA: F(2,30)= 2.04,p < .05 ( $\eta$ ² = .15).Assuming the test statistic value is correct,then which of the following must be incorrect in this report?

$\eta$ ² is a more powerful estimate of effect size than R².