Exam 12: Two-Way Analysis of Variance: Between-Subjects Factorial Design

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?

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

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?

The degrees of freedom for error is called

Which of the following post hoc tests uses the t-critical value in the calculation to determine the critical value for the test?

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?

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?

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

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

The test statistic for a one-way between-subjects ANOVA is the sum of squares between-groups divided by the sum of squares error.

A researcher measures mating displays among 12 birds randomly assigned to be in the presence of no cue,an auditory cue,or a visual cue.The degrees of freedom for this one-way between-subjects ANOVA is 2 and 9 degrees of freedom.

A researcher has the same 18 participants rate 6 pictures (k = 6),each depicting a person with a different body type.The one-way between-subjects ANOVA is an appropriate test statistic to test for mean differences in the ratings of each type of picture.

Violating the assumption of homogeneity of variance tends to increase the likelihood of committing a Type I error.

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

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 researcher conducts two studies using the one-way between-subjects ANOVA.The sum of squares between groups is smaller in Study 1 than in Study 2;the sum of squares total is the same in both studies.Using eta-squared,in which study will the effect size be larger?

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

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 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?

All post hoc tests control for the effect size of a significant result.