In a randomized block design, 80 individuals were paired into 20 pairs according to similar age, gender and weight, with 4 individuals in each pair. The 4 individuals of each pair were randomly allocated into four groups. The group means were compared. In this study, which of the following is correct?
A、νT = 79 ;
B、νblock = 20;
C、νtreatment = 4;
D、νtreatment = 19;
E、νblock = 3
发布时间：2026-01-17 06:07:28
