A B C 3. A personality researcher is interested in exploring the role of gender

Question

A B C 3. A personality researcher is interested in exploring the role of gender and pet ownership on a measure of extraversion". This researcher collects extraversion scores for males and females who fall into these categories: never owned a pet, owned a pet in the past (but not currently), and currently owns a pet. a. Which test should you run? Why? b. Will you consider a Tukey test in this case? Why or why not? c. Will you look for Interaction effects in this case? Why or why not? A social psychologist has a grant to study the effects of higher education and birth order on earning pote This psychologist takes a sample of 100 40-year olds and asks them the following questions: (1) Did you college or university-yes or no? (2) Are you a first-bornionly child-yes or no? The dependent variab annual income. a. Which test should you run? Why?

Explanation / Answer

as we are dealing with 2 categorical varaibles
gender
pet ownership

Hence this is a case of 2 way anova
as we want to measure the variation of extraversion based on 2 categorical variables
gender
pet ownership

b)

We shall conduct a TukeyHSD test only if the results of the anova are statistically signficant
remember that anova is an omnibus test , it only tells that the mean values of the groups are different, atleast for 2 groups. Its doesnt tell which groups are statistically different

Hence TukeyHSD does a pairwise comparision and tells us which groups are exactly different

c)
Yes , we would look for the interaction effect of gender and pet ownership to see if together they have significant effect on the extraversion

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