Practice 10 4. Post hoc analysis Suppose a researcher is interested in the potential connection between church attendance and social class in his community. He selects random samples of people from each social class and asks them to estimate the number of times they attend an organized religious service during a typical month. He performs a statistical analysis of the data, including ANOVA, and finds that the difference between the means is significant at less than 0.001. Results of the analysis are shown in the following table: (Fictitious data) Lower Class Working Class Middle Class Upper Class F ratio Alpha Mean 2.1 7.1 9.7 7.8 36.51