Aliyah Jenkins PSYC 580- Spring 2021 Dr. Shinkareva Homework 4 One-way ANOVA: Contrasts 1. (20 pts) When would you use a contrast analysis? a. Use of a contrast analysis would be recommended for...

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Aliyah Jenkins PSYC 580- Spring 2021 Dr. Shinkareva Homework 4 One-way ANOVA: Contrasts 1. (20 pts) When would you use a contrast analysis? a. Use of a contrast analysis would be recommended for testing general questions regarding population or sample means via comparisons and is denoted by the Greek letter psy (ᴪ). 2. (20 pts) Workbook Exercise 7.2 on p. 64. You can use R for this problem. Make sure to state your conclusions. 3. (40 pts) Workbook Exercise 8.1 on p. 69. 1. What are the contrast coefficients? 2. Determine the mean for each group. 3. Compute Fᴪ1 (the MSS(A) is 2) 4. Is support found for the experimenter’s prediction? 4. (20pts) Use R to check your answers in Exercise 8.1. Include clearly marked relevant output and R code as reference in your write-up.