Which of the Following Statements About Factorial Designs Is TRUE

Multiple Choice

Which of the following statements about factorial designs is TRUE?

A) A factorial design can include either between-subjects independent variables or within-subjects independent variables, but not both in the same study.
B) A factorial design can include either manipulated independent variables or correlational dependent variables, but not both in the same study.
C) It is possible to have a factorial design in which both independent variables are correlational.
D) It is possible to have a factorial design with just one independent variable.