Consider the example in the section "Stratified Sampling". The study population is a junior high school with a total of 4,000 students in grades 7, 8, and 9. Researchers want to know how much these ...
A simple random sample is a subset of a statistical population where each member of the population is equally likely to be ...
Categorical Variable: the variable whose values can be put into categories (groups). Cluster Sampling: a researcher divides the population into clusters. Then, a simple random sample of the clusters ...
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Stratified random sampling is a method of sampling that divides a population into smaller groups that form the basis of test ...