Question 1

For the questions that follow, identify which procedure you would use for each of the given scenarios.
a.One-way ANOVA
b.Factorial ANOVA
c.Repeated measure ANOVA
d.ANCOVA
e.MANOVA
Ben is interested in the relationship between college professors' academic discipline and their actual ability to fix a car, holding constant mechanical aptitude.Ben randomly selects 15 mathematics professors, 15 psychology professors, and 15 philosophy professors at a major university.Each professor completes a mechanical aptitude scale.Scores on this measure have a mean of 100 and a standard deviation of 15.The professors were then rated on how well they performed four automotive maintenance tasks: changing a tire, changing the oil, changing the spark plugs, and adjusting the timing belt.Ratings were based on the degree of success in completing the task and how long it took to complete it.

E

Accepted Answer

E

Question 2

For the questions that follow, identify which procedure you would use for each of the given scenarios.
a.One-way ANOVA
b.Factorial ANOVA
c.Repeated measure ANOVA
d.ANCOVA
e.MANOVA
Malachi is interested in determining whether the average woman wants to express her worries to her husband more (or less) the longer they are married.Malachi develops the Desire to Express Worry scale (DEW) and administers it to the women when they initially get married.He also has the women complete the scale at their 5th, 10th, and 15th wedding anniversaries.

C

Accepted Answer

The scenario involves measuring the same group of women at different points in time, which is a repeated measure design. Therefore, the appropriate statistical procedure to use in this scenario is a repeated measure ANOVA.

Question 3

For the questions that follow, identify which procedure you would use for each of the given scenarios.
a.One-way ANOVA
b.Factorial ANOVA
c.Repeated measure ANOVA
d.ANCOVA
e.MANOVA
Emma is interested in evaluating whether the gender of the client and the gender of a therapist affects the outcome of therapy.Specifically, she is interested in testing the hypothesis that the gender-matched pairs of client-therapist produce the most positive outcomes.Emma has access to a large database and selects a sample of 40 client-therapist pairs, 10 for each type of pairing.All 40 clients are being treated for PTSD, and the therapists use a similar therapy approach.

B

Accepted Answer

Emma is interested in evaluating the effects of both gender of client and gender of therapist, which is a factorial design. Therefore, she would use a factorial ANOVA to analyze the data.

Question 4

Post hoc tests are:&#10;A)Unnecessary in the event of a significant t-test.&#10;B)Necessary in the event of a significant t-test.&#10;C)Unnecessary in the event of a significant ANOVA.&#10;D)Necessary in the event of a significant ANOVA.&#10;E)Unnecessary in the event of significance in any parametric inferential statistics.

Accepted Answer

Post hoc tests (such as Tukey's HSD or Bonferroni correction) are necessary in the event of a significant ANOVA because ANOVA only tells us that there is a significant difference in at least one group, but it doesn't tell us which groups are significantly different from each other. Post hoc tests allow us to make pairwise comparisons between all groups to determine which groups are significantly different from each other.

Question 5

For the questions that follow, identify which procedure you would use for each of the given scenarios.
a.One-way ANOVA
b.Factorial ANOVA
c.Repeated measure ANOVA
d.ANCOVA
e.MANOVA
Malachi is interested in determining whether the average woman wants to express her worries to her husband more (or less) the longer they are married.Malachi develops the Desire to Express Worry scale (DEW) and administers it to the women when they initially get married.He also has the women complete the scale at their 5th, 10th, and 15th wedding anniversaries.

Accepted Answer

This scenario involves comparing the difference in means between three groups (blondes, brunettes, and redheads) for one continuous variable (number of freckles). Therefore, the appropriate procedure to use is a one-way ANOVA.

Deck 7: Anova Models