In Exercises 1-10, fill in the blank with an appropriate word, phrase, or symbol(s) . 9. When a population is divided into parts, called strata, for the purpose of drawing a sample, the procedure is known as ________ sampling.
In Exercises 1-10, fill in the blank with an appropriate word, phrase, or symbol(s) . 9. When a population is divided into parts, called strata, for the purpose of drawing a sample, the procedure is known as ________ sampling.
In Exercises 9–20, identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster.
Driving A student of the author conducted a survey on driving habits by randomly selecting three different classes and surveying all of the students as they left those classes.
In Exercises 9–20, identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster.
Literary Digest Poll In 1936, Literary Digest magazine mailed questionnaires to 10 million people and obtained 2,266,566 responses. The responses indicated that Alf Landon would win the presidential election. He didn’t.
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