Stats Ch. 11

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?

(2, 42)

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?

(3, 84)

The degrees of freedom for the between-groups variability is called

(Both A and C) degrees of freedom denominator and degrees of freedom between-groups

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

3

A researcher observed the mating behavior of 10 porpoises in 5 different social conditions. What are the degrees of freedom between-groups for a one-way within-subjects ANOVA?

4

A researcher computes a one-way within-subjects ANOVA in which k = 4 and n = 20. What are the degrees of freedom error for this test?

57

A researcher measures the time it takes eight participants to complete three successive tasks. What are the degrees of freedom between-persons for a one-way within-subjects ANOVA?

7

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

Fisher's LSD test

Which of the following is an assumption for computing a one-way within-subjects ANOVA?

Independent observations were made within groups, but no between groups

A researcher divides participants into groups that will engage in low, moderate, or intense levels of exercise. The total calories consumed by participants following the exercise are then recorded. What type of statistical design is appropriate for this study?

a one-way between-subjects ANOVA

ANOVA stands for

analysis of variance

Following a significant one-way between-subjects ANOVA in which k > 2, what is the next appropriate step?

conduct post hoc tests

Using a between-subjects ANOVA design,

n · k participants are each observed one time

"Within-subjects" is also called

repeated measures

To summarize a one-way within-subjects ANOVA, we report each of the following except,

the critical values

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

within-groups variability