/* ------------------------------------------------------------------
	FILE: rm.homework2

	DATA: Example of a repeated measures analysis using 
		resistance data. Data are taken from Littell, Freund
		and Spector, SAS System for Linear Models, 3rd Edition,
		1991, p. 120. The example is changed for the presentation
		to behavioral science students. The data are four different
		types of electrodes used to measure skin conductance 
		placed on four different body areas. The variables are ET
		(electrode type), POS1 thru POS4 (skin conducatance resitance
		at positions 1 through 4)

	PURPOSE: Illustrate RM ANOVA. Also old homework assignment (do
		more analyses and write it up).
   ------------------------------------------------------------------- */

* ;
data resistan;
   input et pos1 pos2 pos3 pos4;
cards;
1 5.22 5.61 6.11 6.33
1 6.13 6.14 5.60 5.91 
1 5.49 4.60 4.95 5.42
2 5.78 6.52 5.90 5.67
2 5.77 6.23 5.57 5.96
2 6.43 5.81 5.83 6.12
3 5.66 6.25 5.46 5.08
3 6.53 6.50 6.23 6.84
3 6.22 6.29 5.63 6.36
4 6.75 6.97 6.02 6.88
4 6.22 6.54 6.12 6.61
4 6.05 6.15 5.55 6.13
;

* - this code should get you started;
proc glm;
 class et;
 model pos1-pos4 = et / nouni;
 repeated position / printe;
run;