Experimental designs differ mainly in
A) number of independent variables.
B) method of assigning subjects to treatments.
C) number of pre-measurements of the dependent variable.
D) a and b
E) a, b, and c

Question

Quizplus · Accepted Answer

Experimental designs can vary in the number of independent variables used and the method of assigning subjects to different treatments. The number of pre-measurements of the dependent variable is not a primary factor that determines the type of experimental design. Therefore, options A, B, and C are all partially correct but incomplete on their own. Only option D correctly and comprehensively describes the main differences between different experimental designs.

Experimental Designs Differ Mainly in