This experiment was conducted to investigate the effect of estrogen on weight gain in sheep. The four treatments in the experiment are a factorial combinations of two separate factors: Gender of sheep (male and female) and amount of estrogen (SO and S3). Although this experiment could be analyzed as a factorial, in this example we are treating the four treatments and four levels of a single factor (gender-estrogen combination). Sheep from four different ranches were involved in the experiment. Anticipating that differences in herd management may affect the results, the researchers blocked by ranch. The completeness of an RCBD demanded, therefore, that each ranch volunteer four sheep to the experiment, two males and two females, providing one replication of each treatment level from each ranch. Table 6.1 RCBD. Effect of estrogen on weight gain in sheep (Ibs). Block (=ranch) BT (S s t [ o fol [ [Totad | Mean | a7f | 2] | 62 s 212 3 Block Total Block Mean