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Last modified: Apr 22, 2003 Printer friendly version : [PDF] [PS] Concentration of a hormone in cattle Key words:   Analysis of covariance, baseline measurements Description In an experiment the effect of 3 feed compositions on the concentration of a particular hormone in cattle was investigated. There were 9, 12, and 11 cows respectively in the 3 treatment groups, and for every cow the concentration of the hormone was measured before the start of the experiment and again after a certain period of feeding with experimental compositions. Number of observations: 32 Variable                Description feed Numbered 1-3 initial Initial concentration measurement final Final concentration measurement D final-initial Source The Royal Veterinary and Agricultural University, Denmark. Analysis Analysis of covariance better than analysis of differences. Optimized for Microsoft Internet Explorer 6.0 for Windows webmaster