Question 1

A researcher compares differences in positivity between participants in a low-,middle-,or upper-middle-class family.If she observes 15 participants in each group,then what are the degrees of freedom for the one-way between-subjects ANOVA?

Accepted Answer

A)  (2, 12) 
B)  (3, 43) 
C)  (2, 42) 
D)  (3, 12)

Question 2

A researcher conducts two studies using the one-way between-subjects ANOVA.The sum of squares between groups is smaller in Study 1 than in Study 2; the sum of squares total is the same in both studies.Using $\eta$2,in which study will the effect size be larger?

Accepted Answer

A)  Study 1 
B)  Study 2 
C)  there is not enough information to answer this question

Question 3

The source of variability associated with error variance in the one-way between-subjects ANOVA is called ______.

Accepted Answer

A)  between-groups variability 
B)  within-groups variability 
C)  degrees of freedom 
D)  between-groups variability and within-groups variability

Question 4

A one-way between-subjects ANOVA is conducted to test for mean differences between the levels of two or more factors.

Accepted Answer

A) True 
 B)False

Question 5

A researcher measures differences in romantic feelings among adolescent and adult males.If different participants were in each group,then what type of statistical design is appropriate for this study?

Accepted Answer

A)  a two-independent-sample t test 
B)  a one-way between-subjects ANOVA 
C)  a two-way between-subjects ANOVA 
D)  a two-independent-sample t test and a one-way between-subjects ANOVA

Question 6

$\eta$2 is often reported as R2 for an analysis of variance test.

Accepted Answer

A) True 
 B)False

Question 7

To conduct a one-way between-subjects ANOVA,we assume that the samples were randomly selected from populations with equal variances,and that participants were independently observed in each group.

Accepted Answer

A) True 
 B)False

Question 8

The term "between-subjects" refers to ______.

Accepted Answer

A)  observing the same participants in each group 
B)  observing different participants one time in each group 
C)  the type of post hoc test conducted 
D)  the type of effect size estimate measured

Question 9

Without changing the value of error variance,the ______ the between-groups variability,the more likely we are to retain the null hypothesis.

Accepted Answer

A)  larger 
B)  smaller

Question 10

While it is common to report the result of an ANOVA,researchers rarely report the results of a post hoc test.

Accepted Answer

A) True 
 B)False

Question 11

A researcher randomly assigns 24 participants to one of four groups.At a .05 level of significance,the critical value for a one-way between-subjects ANOVA is 3.49.

Accepted Answer

A) True 
 B)False

Question 12

Post hoc tests control for the total alpha level for a series of tests conducted on the same data.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following post hoc tests uses the t-critical value in the calculation to determine the critical value for the test?

Accepted Answer

A)  Schaffé test 
B)  Tukey's HSD test 
C)  SNK test 
D)  Fisher's LSD test

Question 14

The following is a summary of a one-way between-subjects ANOVA: F(2,37)= 3.42,p 2= .12.How many pairwise comparisons need to be made for this ANOVA result?

Accepted Answer

A)  2 
B)  3 
C)  4 
D)  12

Question 15

Which of the following is not a post hoc test for a one-way between-subjects ANOVA?

Accepted Answer

A)  $\eta$2 
B)  Fisher's LSD test 
C)  Tukey's HSD test 
D)  Bonferroni test

Question 16

An ANOVA is used when samples are selected from two or more populations and when two or more samples are selected from the same population.

Accepted Answer

A) True 
 B)False

Question 17

A researcher randomly assigned 32 children to observe a short clip depicting either their favorite superhero,a parent,a teacher,or no person at all (n = 8 per group).If SSBG = 30 and SSE = 104,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

Accepted Answer

A)  reject the null hypothesis. 
B)  retain the null hypothesis. 
C)  there is not enough information to answer this question

Question 18

In a study with three groups and 13 participants in each group,the sum of squares for the within-groups source of variation is 18.What is the value for the mean square within groups in this study?

Accepted Answer

A)  2 
B)  3 
C)  9 
D)  0.5

Question 19

Cohen's d is the most commonly reported measure of effect size for the one-way between-subjects ANOVA.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is a measure of proportion of variance for a one-way between-subjects ANOVA?

Accepted Answer

A)  $\eta$2 
B)  $\omega$2 
C)  estimated Cohen's d 
D)  $\eta$2 and $\omega$2

Exam 12: Analysis of Variance: One-Way Between-Subjects Design

A researcher compares differences in positivity between participants in a low-,middle-,or upper-middle-class family.If she observes 15 participants in each group,then what are the degrees of freedom for the one-way between-subjects ANOVA?

A researcher conducts two studies using the one-way between-subjects ANOVA.The sum of squares between groups is smaller in Study 1 than in Study 2; the sum of squares total is the same in both studies.Using $\eta$ ²,in which study will the effect size be larger?

The source of variability associated with error variance in the one-way between-subjects ANOVA is called ______.

A one-way between-subjects ANOVA is conducted to test for mean differences between the levels of two or more factors.

A researcher measures differences in romantic feelings among adolescent and adult males.If different participants were in each group,then what type of statistical design is appropriate for this study?

$\eta$ ² is often reported as R² for an analysis of variance test.

To conduct a one-way between-subjects ANOVA,we assume that the samples were randomly selected from populations with equal variances,and that participants were independently observed in each group.

The term "between-subjects" refers to ______.

Without changing the value of error variance,the ______ the between-groups variability,the more likely we are to retain the null hypothesis.

While it is common to report the result of an ANOVA,researchers rarely report the results of a post hoc test.

A researcher randomly assigns 24 participants to one of four groups.At a .05 level of significance,the critical value for a one-way between-subjects ANOVA is 3.49.

Post hoc tests control for the total alpha level for a series of tests conducted on the same data.

Which of the following post hoc tests uses the t-critical value in the calculation to determine the critical value for the test?

The following is a summary of a one-way between-subjects ANOVA: F(2,37) = 3.42,p < .05, $\eta$ ²= .12.How many pairwise comparisons need to be made for this ANOVA result?

Which of the following is not a post hoc test for a one-way between-subjects ANOVA?

An ANOVA is used when samples are selected from two or more populations and when two or more samples are selected from the same population.

A researcher randomly assigned 32 children to observe a short clip depicting either their favorite superhero,a parent,a teacher,or no person at all (n = 8 per group) .If SS_BG = 30 and SS_E = 104,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

In a study with three groups and 13 participants in each group,the sum of squares for the within-groups source of variation is 18.What is the value for the mean square within groups in this study?

Cohen's d is the most commonly reported measure of effect size for the one-way between-subjects ANOVA.

Which of the following is a measure of proportion of variance for a one-way between-subjects ANOVA?

Exam 12: Analysis of Variance: One-Way Between-Subjects Design

A researcher compares differences in positivity between participants in a low-,middle-,or upper-middle-class family.If she observes 15 participants in each group,then what are the degrees of freedom for the one-way between-subjects ANOVA?

A researcher conducts two studies using the one-way between-subjects ANOVA.The sum of squares between groups is smaller in Study 1 than in Study 2; the sum of squares total is the same in both studies.Using η\etaη 2,in which study will the effect size be larger?

The source of variability associated with error variance in the one-way between-subjects ANOVA is called ______.

A one-way between-subjects ANOVA is conducted to test for mean differences between the levels of two or more factors.

A researcher measures differences in romantic feelings among adolescent and adult males.If different participants were in each group,then what type of statistical design is appropriate for this study?

η\etaη 2 is often reported as R2 for an analysis of variance test.

To conduct a one-way between-subjects ANOVA,we assume that the samples were randomly selected from populations with equal variances,and that participants were independently observed in each group.

The term "between-subjects" refers to ______.

Without changing the value of error variance,the ______ the between-groups variability,the more likely we are to retain the null hypothesis.

While it is common to report the result of an ANOVA,researchers rarely report the results of a post hoc test.

A researcher randomly assigns 24 participants to one of four groups.At a .05 level of significance,the critical value for a one-way between-subjects ANOVA is 3.49.

Post hoc tests control for the total alpha level for a series of tests conducted on the same data.

Which of the following post hoc tests uses the t-critical value in the calculation to determine the critical value for the test?

The following is a summary of a one-way between-subjects ANOVA: F(2,37) = 3.42,p < .05, η\etaη 2= .12.How many pairwise comparisons need to be made for this ANOVA result?

Which of the following is not a post hoc test for a one-way between-subjects ANOVA?

An ANOVA is used when samples are selected from two or more populations and when two or more samples are selected from the same population.

A researcher randomly assigned 32 children to observe a short clip depicting either their favorite superhero,a parent,a teacher,or no person at all (n = 8 per group) .If SSBG = 30 and SSE = 104,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

In a study with three groups and 13 participants in each group,the sum of squares for the within-groups source of variation is 18.What is the value for the mean square within groups in this study?

Cohen's d is the most commonly reported measure of effect size for the one-way between-subjects ANOVA.

Which of the following is a measure of proportion of variance for a one-way between-subjects ANOVA?

A researcher conducts two studies using the one-way between-subjects ANOVA.The sum of squares between groups is smaller in Study 1 than in Study 2; the sum of squares total is the same in both studies.Using $\eta$ ²,in which study will the effect size be larger?

$\eta$ ² is often reported as R² for an analysis of variance test.

The following is a summary of a one-way between-subjects ANOVA: F(2,37) = 3.42,p < .05, $\eta$ ²= .12.How many pairwise comparisons need to be made for this ANOVA result?

A researcher randomly assigned 32 children to observe a short clip depicting either their favorite superhero,a parent,a teacher,or no person at all (n = 8 per group) .If SS_BG = 30 and SS_E = 104,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?