Subgroups are to stratified random sampling as ____ is/are to the randomized block design.
A)homogeneity
B)randomization
C)blocks
D)order effects

Question

Quizplus · Accepted Answer

In a randomized block design, subjects are first divided into homogeneous groups (blocks) based on some known attribute relevant to the study. Then, subjects within each block are randomly assigned to treatment groups. This helps to control for the effect of the blocking variable, while still allowing for randomization within each block. Therefore, choice C (blocks) is the best analogy for subgroups in stratified random sampling.

Subgroups Are to Stratified Random Sampling as ____ Is/are to the Randomized