Ch. 12 one way between subjects anova

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 participants are observed k times

Homogeneity of variance is an assumption for the one-way between-subjects ANOVA. What does this assumption mean?

that the variance is equal in each population from which samples are selected

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

the number of factors in the design

A lowercase k is used to denote ______.

the number of groups in a study and the number of levels of the factor in a study

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?

0.5

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?

20

The following is a summary of a one-way between-subjects ANOVA: F(2, 37) = 3.42, p < .05, η2= .12. How many pairwise comparisons need to be made for this ANOVA result?

3

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.

True

A professor compared differences in class grades between students in their freshman, sophomore, junior, and senior years of college. If different participants were in each group, then what type of statistical design is appropriate for this study?

a one-way between-subjects ANOVA

A researcher measures differences in recall between male and female participants following a romantic movie clip. If different participants were in each group, then what type of statistical design is appropriate for this study?

a two-independent-sample t test and a one-way between-subjects ANOVA