Question 1

For an analysis of variance,the term "one-way" refers to

Accepted Answer

A) the number of factors in the design 
B) the number of statistical tests in the design 
C) the number of ways that the data can be analyzed 
D) the direction that traffic should follow on a road

Question 2

A researcher conducts a study in which k = 4 and n = 22 in each group.What are the degrees of freedom for the one-way between-subjects ANOVA?

Accepted Answer

A) (3,84) 
B) (4,88) 
C) (4,22) 
D) (3,18)

Question 3

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

Accepted Answer

A) larger 
B) smaller

Question 4

In a study with four groups and 10 participants in each group,the sum of squares for the between-groups source of variation is 60.What is the value for the mean square between-groups in this study?

Accepted Answer

A) 10 
B) 15 
C) 20 
D) 1.67

Question 5

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

Accepted Answer

A) eta-squared 
B) omega-squared 
C) estimated Cohen's d 
D) both A and B

Question 6

Which of the following post hoc tests is associated with the greatest power to detect an effect?

Accepted Answer

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

Question 7

A researcher conducts a study using the one-way between-subjects ANOVA.He computes  = 120 and  = 200.What is the effect size for this test using eta-squared?

Accepted Answer

A) 0.60 
B) 0.38 
C) 1.67 
D) There is not enough information to answer this question.

Question 8

What is the minimum number of groups that can be observed using the one-way between-subjects ANOVA design?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4

Question 9

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 10

An analysis of variance is a statistical procedure used to test hypotheses for one or more factors concerning the variance among two or more group means,where the variance in one or more populations is unknown.

Accepted Answer

A) True 
 B)False

Question 11

The following is a summary of a one-way between-subjects ANOVA: F(2,37)= 3.42,p < .05,  = .12.How many participants were observed in this study?

Accepted Answer

A) 12 
B) 37 
C) 40 
D) 39

Question 12

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) both A and B

Question 13

Two measures of proportion of variance for the one-way between-subjects ANOVA are eta-squared and omega-squared.

Accepted Answer

A) True 
 B)False

Question 14

A researcher randomly assigned 16 rodents to experience one of four levels of shock (n = 4 per group)following the illumination of a visual cue.If  = 24 and  = 48,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 15

Post hoc tests are computed

Accepted Answer

A) Prior to conducting a hypothesis test. 
B) To determine which set of degrees of freedom can be attributed to the variability between-groups. 
C) Following a significant ANOVA test to make pairwise comparisons. 
D) to determine if groups means differ,even for tests in which the decision is to retain the null hypothesis.

Question 16

A mean square is a sample variance.

Accepted Answer

A) True 
 B)False

Question 17

A researcher computes the following one-way between-subjects ANOVA table.State the decision at a .05 level of significance.(Hint: Complete the table first. )

Accepted Answer

A) Reject the null hypothesis. 
B) Retain the null hypothesis. 
C) There is not enough information to answer this question.

Question 18

The same participants are observed in each group using the between-subjects design.

Accepted Answer

A) True 
 B)False

Question 19

A researcher conducts a study in which k = 6 and n = 6 per group.What are the critical values for the one-way between-subjects ANOVA at a .05 level of significance?

Accepted Answer

A) 3.70 
B) 3.47 
C) 2.53 
D) 2.42

Question 20

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

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

For an analysis of variance,the term "one-way" refers to

A researcher conducts a study in which k = 4 and n = 22 in each group.What are the degrees of freedom for the one-way between-subjects ANOVA?

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

In a study with four groups and 10 participants in each group,the sum of squares for the between-groups source of variation is 60.What is the value for the mean square between-groups in this study?

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

Which of the following post hoc tests is associated with the greatest power to detect an effect?

A researcher conducts a study using the one-way between-subjects ANOVA.He computes = 120 and = 200.What is the effect size for this test using eta-squared?

What is the minimum number of groups that can be observed using the one-way between-subjects ANOVA design?

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.

An analysis of variance is a statistical procedure used to test hypotheses for one or more factors concerning the variance among two or more group means,where the variance in one or more populations is unknown.

The following is a summary of a one-way between-subjects ANOVA: F(2,37) = 3.42,p < .05, = .12.How many participants were observed in this study?

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

Two measures of proportion of variance for the one-way between-subjects ANOVA are eta-squared and omega-squared.

A researcher randomly assigned 16 rodents to experience one of four levels of shock (n = 4 per group) following the illumination of a visual cue.If = 24 and = 48,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

Post hoc tests are computed

A mean square is a sample variance.

A researcher computes the following one-way between-subjects ANOVA table.State the decision at a .05 level of significance.(Hint: Complete the table first. )

The same participants are observed in each group using the between-subjects design.

A researcher conducts a study in which k = 6 and n = 6 per group.What are the critical values for the one-way between-subjects ANOVA at a .05 level of significance?

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