In an experiment the primary purpose of blocking is to
A) reduce the within-treatment variation.
B) reduce bias.
C) reduce the between-treatment variation.
D) eliminate the need for random assignment of treatments.
E) eliminate confounding variables.

Question

Quizplus · Accepted Answer

Blocking is used to reduce the within-treatment variation by accounting for known sources of variability among experimental units, making it easier to detect treatment effects.

In an Experiment the Primary Purpose of Blocking Is to