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

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

A researcher assigned participants (n = 8 per group)to read vignettes describing a person engaging in either a helpful,hurtful,or neutral act.Different participants were assigned to each group and asked to rate how positively they viewed the person described in the vignette.What is the critical value for the one-way between-subjects ANOVA at a .05 level of significance?

ANOVA stands for,

Cohen's d is the most commonly reported measure of effect size for the one-way between-subjects ANOVA.

The degrees of freedom for a one-way between-subjects ANOVA is the sample size minus one.

Post hoc tests are conducted following a significant one-way between-subjects ANOVA,only when k > 2.

A researcher conducts two studies on child health.In Study 1,30 children consume either a low-,moderate-,or high-fat meal (n = 10 per group).In Study 2,the researcher conducts the same study,except that a No Meal control group is added,with n = 10 in each group.If = 3.11 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 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?

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

A post hoc test is only necessary following a decision to retain the null hypothesis.

A lowercase k is used to denote

The numerator of the test statistic for a one-way between-subjects ANOVA is the mean variability associated with 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.

The test statistic for a one-way between-subjects ANOVA is used to determine whether the variance associated with having different groups is significantly larger than the variance attributed to chance or error.

For a one-way between-subjects ANOVA,a study with 3 and 36 degrees of freedom must have had participants assigned to four groups.

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

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 conducts a study in which k = 5 and N = 80.What are the degrees of freedom between-groups for the one-way between-subjects ANOVA?

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.

Post hoc tests control for the total alpha level for a series of tests conducted on the same data.