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Last modified: Apr 22, 2003 Printer friendly version : [PDF] [PS] Hormone treatment of steers. Key words:   Randomized block, analysis of covariance. Description In an experiment with steers the influence of 4 hormone treatments (1,2,3,4) on the weight of kidney fat was examined. A total of 16 steers in 4 blocks were used distributed with 4 on each hormone treatment. The results can be seen in the table below where for each steer the weight of the animal before the hormone treatment (in kg) and the weight Y of kidney fat (in gram) a suitable time period after the hormone treatment is given. The weight of the animal before the hormone treatment is recorded as a covariate with the aim of reducing the random variation as described above. Hormone treatment 1 2 3 4 Weight Y Weight Y Weight Y Weight Y Block 1 560 1330 440 1280 530 1290 690 1340 Block 2 470 1320 440 1270 510 1300 420 1250 Block 3 410 1270 360 1270 380 1240 430 1260 Block 4 500 1320 460 1280 500 1290 540 1310 Number of observations: 16 Variable                Description block Numbered 1-4 treat Numbered 1-4 weight Initial weight (kg) Y Weight of kidney fat (gram) Source Mead and Curnow, 1983)[section 8.8]. Analysis Randomized block, analysis of covariance. Optimized for Microsoft Internet Explorer 6.0 for Windows webmaster