Stratified random sampling is a method of selecting a sample in which
A)the sample is first divided into strata, and then random samples are taken from each stratum
B)various strata are selected from the sample
C)the population is first divided into strata, and then random samples are drawn from each stratum
D)None of these alternatives is correct.

Question

Quizplus · Accepted Answer

Stratified random sampling involves dividing the population into strata based on some characteristic, such as age or gender, and then drawing random samples from each stratum. This method ensures that each stratum is represented in the sample proportionally to its size in the population, and can increase the accuracy and representativeness of the sample. Choices A and B are incorrect because they do not involve randomly sampling from each stratum. Choice D is incorrect because one of the alternatives is correct.

Stratified Random Sampling Is a Method of Selecting a Sample