Which of the following explains interaction in a multiple ...

[mwit1967]

Which of the following explains interaction in a multiple regression model?
 a. The interaction effect is always equal to zero.
 
  b. Interaction occurs when the effect on the dependent variable of a change in one predictor, holding the other constant, depends on where that other variable is held constant.
 
  c. Interaction always occurs when there are more than two predictors in a model.
 
  d. Interaction occurs when two independent variables do not depend on the value of each other when determining their effect on the dependent variable.

Question 2

Which of the following are attributes charts?
 a. p chart, chart, and u chart
  b. p chart, X chart, and u chart
  c. p chart, c chart, and u chart
  d. p chart, c chart, and R chart

[jharrington11]

Answer to Question 1

b

Answer to Question 2

c