When a variable is identified as reducing variation in the response variable, but no additional
knowledge concerning the variable is desired, it should be used as the blocking factor in the
randomized block design.

Question

Quizplus · Accepted Answer

Using a variable as a blocking factor in a randomized block design helps to control for its effects by reducing variation in the response variable, thus increasing the experiment's sensitivity to detect differences in treatments without the need to directly study the variable's specific impact.

When a Variable Is Identified as Reducing Variation in the Response