Explain the Randomized Block Design
-When the effects of the explanatory variable upon the response variable cannot be determined, then
A) confounding has occurred.
B) a lurking variable is present.
C) there is sampling error.
D) the claim is invalid.

Question

Quizplus · Accepted Answer

Confounding occurs when the effects of two or more explanatory variables cannot be separated. In a randomized block design, the subjects are divided into blocks, and each block is randomly assigned to one of the treatments. This helps to control for the effects of any lurking variables that might be present, and it allows the researcher to determine the effects of the explanatory variable upon the response variable.