Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_vufgb-equation-009-en_vufgb-equation-009-en
   name	vufgb-equation-009-en
   section	Inferential Statistics/Regression/Equation
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	Conceptual
   Program
   Language	English
   Level	Statistical Thinking

   Question

   Which of the following regression equations belongs to an ANCOVA (“Covariance analysis”) with one factor with two levels, one covariate x, and interaction between the factor and the covariate?

   
   
   1. FALSE: $\hat{y} = a+bx+b_{1}z_{1}$
   2. FALSE: $\hat{y} = a+bx+b_{1}z_{1}+b_{2}z_{2}$
   3. TRUE: $\hat{y} = a+bx+b_{1}z_{1}+b_{2}z_{1}x$
   4. FALSE: $\hat{y} = a+bx+b_{1}z_{1}+b_{2}z_{2}+b_{3}z_{1}x+b_{4}z_{2}x$
   
   
   1. Incorrect
   2. Incorrect
   3. Correct
   4. Incorrect