When the population is divided into mutually exclusive sets,and then a simple random sample is drawn from each set,this is called:
A)simple random sampling.
B)stratified random sampling.
C)cluster sampling.
D)selection bias.

Question

Quizplus · Accepted Answer

This is stratified random sampling, as the population is divided into mutually exclusive sets (strata) and a simple random sample is drawn from each set. This technique is used to ensure representation from each sub-group within a population, and is often more efficient than simple random sampling as it allows for greater precision in estimating population parameters.

When the Population Is Divided into Mutually Exclusive Sets,and Then