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

The term "between-subjects" refers to

How does omega-squared for the one-way between-subjects ANOVA correct for the fact that eta-squared tends to be a biased estimate of effect size?

Which of the following statements is the appropriate way to read the degrees of freedom for an ANOVA with 10 participants in each of four groups?

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?

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

A significant ANOVA indicates that all pairs of group means significantly differ.

Unlike omega-squared,the formula for eta-squared corrects for the number of groups and the size of error in its estimate of effect size.

Computing a one-way between-subjects ANOVA is appropriate when

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

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" ANOVA is associated with one degree of freedom.

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

A researcher conducts two studies on self-perception.In Study 1,24 participants rate how positively they view themselves (on a 5-point scale)in one of three groups (n = 8 per group).In Study 2,the researcher conducts a similar study,except that k = 3 and n = 8.If = 28 and = 42 in both studies,then in which study will the decision be to reject the null hypothesis at a .05 level of significance for 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?

When the variability attributed to between-groups is equal to the variability attributed to error,then the value of the test statistic for a one-way between-subjects ANOVA is,

A researcher computes the following one-way between-subjects ANOVA table for a study where k = 3 and n = 12.State the decision at a .05 level of significance.(Hint: Complete the table first. )

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?

To summarize the results of a one-way between-subjects ANOVA test,we report the test statistic,the degrees of freedom,and the p value.

A researcher assigns 21 adolescents to rate the likability of a person described in a vignette as having one of three personality traits.An equal number of participants are assigned to each group.If = 4.08 for this study,then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?

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