Question: Refer to Exercise. Give one advantage of each sampling method in the context of the problem.
Exercise: Suppose a state has 10 universities, 25 four-year colleges, and 50 community colleges, each of which offer multiple sections of an introductory statistics class each year. Researchers want to conduct a survey of students taking introductory statistics in the state. Explain a method for collecting each of the following types of samples:
a. A stratified sample.
b. A cluster sample.
c. A simple random sample.