Deciding when to do post hoc analysis

Your book discussed when to do post hoc analyses. In this activity, you will apply thisinformation(Links to an external site.)

.You may imagine that you are quality control for Pinterest and tasked with the job of determining if the person who made the chart has any basis for classifying the movie characters in this manner. That is, do the people in the different groups differ in height in a statistically significant way?

Open up SPSS and create a variable for group (values: small, medium, and large) and height (hint: convert to inches). Enter the data from the chart and run the analysis. If necessary, conduct post hoc analyses. Answer the following questions.

1. You should have used a one-way ANOVA. Explain why that test is appropriate.
2. What is the hypothesis? What are the post hoc hypotheses in this case?
3. When you ran the analysis, what indicated your need to do or not do post hoc analysis?
4. What did the analyses indicate regarding group classification? Which groups (if any) were different from each other?
5. Attach the two output boxes created when you run the ANOVA and Tukey HSD.