A ______ is a research design consisting of one independent variable; a ______ is a research design consisting of all possible combination of two or more independent variables.
A) factorial research design; single-factor research design
B) factorial research design; interaction effect
C) single-factor research design; factorial research design
D) single-factor research design; interaction effect

Question

Quizplus · Accepted Answer

A single-factor research design has only one independent variable, while a factorial research design has two or more independent variables, looking at all possible combinations. The other options are incorrect because an interaction effect is not a research design but a statistical phenomenon that occurs when the effect of one independent variable on the dependent variable depends on the level of another independent variable.

A ______ Is a Research Design Consisting of One Independent