If your analysis notes that participants in a weight loss study differ in amount of weight lost based on the type of weight loss program used, what type of effect is this called?
A)interaction effect
B)factor effect
C)level effect
D)main effect

Question

Quizplus · Accepted Answer

A main effect refers to the overall effect of one independent variable on the dependent variable, without considering the influence of other independent variables. In this case, the type of weight loss program used is the independent variable and the amount of weight lost is the dependent variable. Therefore, the difference in amount of weight lost based on the type of weight loss program used is a main effect. Interaction effect refers to the combined effect of two or more independent variables on the dependent variable, factor effect refers to the effect of a specific level of an independent variable on the dependent variable, and level effect refers to the effect of changing the level of an independent variable on the dependent variable.

If Your Analysis Notes That Participants in a Weight Loss