​Figure TB 11-3 $$Y _ { i } = \beta _ { 0 } + \beta _ { 1 } z _ { 1 i } + \beta _ { 2 } z _ { 2 i } + \beta _ { 3 } z _ { 1 i } z _ { 2 i } + e _ { i }$$

Multiple Choice

​Figure TB 11-3
$$Y _ { i } = \beta _ { 0 } + \beta _ { 1 } z _ { 1 i } + \beta _ { 2 } z _ { 2 i } + \beta _ { 3 } z _ { 1 i } z _ { 2 i } + e _ { i }$$
-The accompanying formula is the regression model for the____.

A) 2 x 2 factorial
B) randomized block
C) analysis of covariance
D) regression point displacement