Lecture 13: Comparisons and Linear Contrasts

We discuss how to make a pairwise comparison between groups using the pooled standard deviation estimate from the overall ANOVA, how to set up and carry out a linear contrast, and the difference between different possible weighting schemes in a linear contrast. Then we went over random effects for One-Way ANOVA. We used the data for the percent of women in the jury pool for various judge's:

PERCENT	JUDGE
6.40	SPOCK'S      
8.70	SPOCK'S      
13.30	SPOCK'S      
13.60	SPOCK'S      
15.00	SPOCK'S      
15.20	SPOCK'S      
17.70	SPOCK'S      
18.60	SPOCK'S      
23.10	SPOCK'S      
16.80	A            
30.80	A            
33.60	A            
40.50	A            
48.90	A            
27.00	B            
28.90	B            
32.00	B            
32.70	B            
35.50	B            
45.60	B            
21.00	C            
23.40	C            
27.50	C            
27.50	C            
30.50	C            
31.90	C            
32.50	C            
33.80	C            
33.80	C            
24.30	D            
29.70	D            
17.70	E            
19.70	E            
21.50	E            
27.90	E            
34.80	E            
40.20	E            
16.50	F            
20.70	F            
23.50	F            
26.40	F            
26.70	F            
29.50	F            
29.80	F            
31.90	F            
36.20	F