OPTIONS LS=72;
TITLE 'EXAMPLE 17. ONE-WAY RANDOM-EFFECTS ANOVA MODEL: STRENGTH DATA';
DATA STRENGTH;
INPUT LOOM OBS;
CARDS;
1    98
1    97
1    99
1    96
2    91
2    90
2    93
2    92
3    96
3    95
3    97
3    95
4    95
4    96
4    99
4    98
;
PROC PRINT DATA=STRENGTH;

PROC GLM DATA=STRENGTH;
CLASS LOOM;
MODEL OBS=LOOM;
RANDOM LOOM/TEST;