One main reason to choose stratified sampling is to improve the accuracy of sample estimates for the combined strata (two or more strata).

Question

Quizplus · Accepted Answer

Stratified sampling ensures that each stratum is represented in the sample and that the sample size within each stratum is proportional to its size in the population. This leads to more accurate estimates for the combined strata because the variability within each stratum is reduced, and the overall sample represents the population more accurately.

One Main Reason to Choose Stratified Sampling Is to Improve