Homework Sourse1 A researcher groups college students in a study based on t
1. A researcher groups college students in a study based on their year in college (freshman, sophomore, junior, senior) and the type of college they attend (junior, technical, university). He concludes that perceptions of academic cheating are more positive among freshman attending junior college. To reach this conclusion, which statistical test would need to be computed?
a. a two-way between-subjects ANOVA
b. a simple main effect test
c. a post hoc test
d. all of the above
2. There are ____ factors in a 2 × 3 ANOVA design.
a. 2
b. 3
c. 5
d. 6
3. Which of the following correctly identifies each source of variation in the two-way between-subjects ANOVA?
a. two between-groups, one within-groups, and error
b. two within-groups, one between-groups, and error
c. two interactions, one main effect, and error
d. two main effects, one interaction, and error
4. The complexity of the two-way ANOVA differs from that of the t tests and the one-way ANOVAs in that,
a. two factors can be observed using the two-way ANOVA, but not using the t tests and the one-way ANOVAs.
b. an interaction can be observed using the two-way ANOVA, but not using the t tests and the one-way ANOVAs.
c. an interaction can be observed using the two-way ANOVA, but not using the t tests and the one-way ANOVAs.
d. all of the above
5. For a two-way ANOVA, the ________ should also be reported for each significant hypothesis test and for the simple main effect tests.
a. effect size
b. critical values
c. individual participant data
d. all of the above
6. A researcher computes a 2 × 3 factorial ANOVA. In this example, how many interactions can be observed?
a. 1
b. 2
c. 3
d. 6
7. Which of the following is NOT an assumption for computing a two-way between-subjects ANOVA?
a. The population being sampled from is normally distributed.
b. Participants were selected using a random procedure.
c. One observation has no effect on the likelihood of another observation.
d. There is homogeneity of variance and homogeneity of covariance.
| a. a two-way between-subjects ANOVA | ||
| b. a simple main effect test | ||
| c. a post hoc test | ||
| d. all of the above |
Solution
1 Answer a
a two-way between-subjects ANOVA
2
Answer a
There are 2 factors in a 2 × 3 ANOVA design
3.
Answer is d
two main effects, one interaction, and error
4
Answer is d
all of the above that is
two factors and an interaction can be observed using the two-way ANOVA, but not using the t tests and the one-way ANOVAs.
5.
Answer is a
effect size
6.
Answer is a.
One interactions can be observed.
7.
answer is a
The population being sampled from is normally distributed.
