Question: A professor wanted to select 20 students from his class

A professor wanted to select 20 students from his class of 300 students to collect detailed information on the profiles of his students. He used his knowledge and expertise to select these 20 students.
a. Is this sample a random or a nonrandom sample? Explain.
b. What kind of sample is it? In other words, is it a simple random sample, a systematic sample, a stratified sample, a cluster sample, a convenience sample, a judgment sample, or a quota sample? Explain.
c. What kind of systematic error, if any, will be made with this kind of sample? Explain.

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  • CreatedAugust 25, 2015
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