Exam 13: Analysis of Variance: One-Way Within-Subjects Repeated-Measuresdesign

For a within-subjects design,the degrees of freedom between groups are always equal to the degrees of freedom between persons.

A researcher conducts two studies on the effectiveness of a peer mentoring program.Self-evaluation ratings among participants before,during,and after the program were measured in both studies.In Study 1,12 participants were observed,and in Study 2,16 participants were observed.If F_obt = 3.42 in both studies,then in which study will the decision be to reject the null hypothesis at a .05 level of significance?

Which of the following designs are associated with greater power to detect an effect,particularly when there is consistent participant responding between groups?

If 12 participants are observed in each of four groups,then the degrees of freedom between persons is equal to 11.

A researcher records depression scores for 12 patients in each of four seasons.If depression scores for the same participants are recorded in each season,then what type of statistical design is most appropriate for this study?

Because a one-way within-subjects ANOVA has two sources of error,it is generally associated with more error variability than a one-way between-subjects ANOVA.

A one-way within-subjects ANOVA would be an appropriate statistical test when n participants are observed k times.

The term "within-subjects" refers to ______.

A researcher measures anxiety levels among participants in the presence and absence of a fearful stimulus.If the same participants are observed in each group,then what type of statistical design is appropriate for this study?

The test statistic for a one-way within-subjects ANOVA is mean square between groups divided by mean square error.

If the experimentwise alpha for three tests is .05,then what is the value for testwise alpha?

The between-persons variation is measured in the one-way within-subjects ANOVA.

A researcher computes the following one-way within-subjects ANOVA table.State the decision at a .05 level of significance.

A Bonferroni test controls for ______.

Consistency refers to the extent to which the dependent measure changes in an identifiable or predictable pattern across groups.

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?

Which of the following is a source of variation that is measured using the one-way within-subjects ANOVA?

The Bonferroni test controls for experimentwise alpha.

A one-way within-subjects ANOVA is typically associated with ______ power than the one-way between-subjects ANOVA.

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