Exam 13: Two Groups Too Many Try Analysis of Variance

A researcher wants to create an intervention to improve the well-being of first-semester graduate students, so she gives one group of students specific doses of rocky road ice cream, the next group of students specific doses of licorice, and the third group of students specific doses of chewy fruit-flavored candies for their treatments.To analyze the differences in well-being between the types of "treatment," she would use a(n) _______.

If you perform multiple t-tests, which of the following is true?

In a 4 × 3 factorial design, there are how many levels of the first grouping factor?

The ANOVA can be used to test the differences _______.

What is the next step after stating the null and research hypotheses in the computation of the F statistic?

When interpreting F₍₂, ₂₇₎ = 8.80, p < .05, what is the within-groups df?

When interpreting F₍₂, ₂₇₎ = 8.80, p < .05, what is the between-groups df?

A research study is investigating the effects of studying French 1, 2, or 3 hours weekly between fourth graders and ninth graders.How would this factorial design be best described?

When your research question calls for you to examine the differences in group means among three or more groups, which of the following would be the appropriate procedure?

The ANOVA is a(n) _______.

What is the sum of squares total?

If the total sample size was 50, and there were three groups examined, what is the between-groups degrees of freedom?

What is the next step after choosing a specific test in the computation of the F statistic?

Which of the following would be an example of a design that examines the effects of gender and socioeconomic status (i.e., high, medium, and low) on a test of student achievement?

The variability within groups is due to _______.

When interpreting F₍₂, ₂₇₎ = 8.80, p < .05, how many groups were examined?

How would you interpret the equation: H₀: µ₁ = µ₂ = µ₃?

The ANOVA is like an extension of the _______.

A research study is investigating the effects of studying Chinese 1 or 2 hours weekly between eleventh graders and twelfth graders.How would this factorial design be best described?

When computing the degrees of freedom for ANOVA, how is the within-group estimate calculated?