In a 2 × 3 factorial design, there are _____ main effect(s) and _____ interaction effect(s) possible.

A) 2; 2
B) 2; 1
C) 1; 1
D) 1; 2

Factorial Design

An experimental setup that allows researchers to study the effects of two or more independent variables simultaneously on a dependent variable.

Main Effect

In statistical analysis, the direct impact of an independent variable on a dependent variable.

Interaction Effect

Occurs when the effect of one independent variable on the dependent variable differs depending on the level of another independent variable.