A(n)____ is a situation in which treatments have no effect.
A)null case
B)main effect
C)interaction effect
D)crossover case

Question

Quizplus · Accepted Answer

A null case refers to a situation in which treatments have no effect, meaning that there is no significant difference between groups or conditions being compared. Main effect refers to the effect of a single independent variable on a dependent variable, while interaction effect refers to the effect of two or more independent variables on a dependent variable. Crossover case is not a commonly used term in statistics or research methodology.

A(n)____ Is a Situation in Which Treatments Have No Effect