In a two-factor experimental design model,Yᵢⱼk = µ + βᵢ + αⱼ + Iᵢⱼ + εᵢⱼₖ,what does µ represent?
A)individual observation on the dependent variable
B)grand mean
C)interaction effect of factors A and B
D)jth effect of factor A - column treatment

Question

Quizplus · Accepted Answer

In a two-factor experimental design model, µ represents the grand mean which is the overall mean of all the observations in the experiment. It is calculated by adding up all the observations and dividing by the total number of observations.

In a Two-Factor Experimental Design Model,Yᵢⱼk = µ + βᵢ