I want to replicate the results of Task 4 (Page 24) in the following document: https://edge.sagepub.com/system/files/chapter15_1.pdf Here is the problem's statement. Angry Birds is a video game in which you fire birds at pigs. Some daft people think this sort of thing makes people more violent. A (fabricated) study was set up in which people played Angry Birds and a control game (Tetris) over a two-year period (one year per game). They were put in a pen of pigs for a day before the study, and after 1 month, 6 months and 12 months. Their violent acts towards the pigs were counted. The data are in the file Angry Pigs.sav. Does playing Angry Birds make people more violent to pigs compared to a control game? I have attached the data set. This problem involves a repeated-measures ANOVA with one binary factor. I have 5 questions: 1) Can I get Figure 18 (Page 25) automatically from a statistical procedure, or do I have to use PROC SGPLOT to do it manually? 2) Is there a statistical procedure that provides Outputs 16 and 17 (Page 26)? 3) I ran the following code: data v1; retain id; set h2; if VideoGame = 'ExperimentalGroup-AngryBirdsVideoGame' then VideoGame = 'ab'; else if VideoGame = 'ControlGroup-TerisVideoGame' then VideoGame = 'tetris'; ID = _n_; rename VideoGame = game ViolentAct_Baseline = baseline ViolentAct_Time1 = t1 ViolentAct_Time2 = t2 ViolentAct_Time3 = t3; run; proc glm data = v1; class game; model baseline t1 t2 t3 = game / nouni; means game / welch; repeated time 4 / printe; title 'Repeated-measures ANOVA'; title2 'Within-subjects factor: time'; title3 'Between-subjects factor: game'; quit; title; I got this output. Why is it different from Output 18 on Page 26? How can I replicate Output 18? 4) How do I replicate the Levene's test of equality of error variances (Output 19, Page 27)? 5) How do I replicate the contrasts in Output 22 on Page 28?
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