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part 1) Read the excerpts (listed above) from The Process of Social Research, by Dixon (the section titled as “Principles of Probability Sampling” [p. 140 – p. 148] can be skipped). Read also the textbook (the section titled as “Sampling” p. 118 – p. 125 ), and answer the following questions.
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What is the difference between probability sampling and nonprobability sampling?
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What is the purpose of probability sampling?
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What is a sample?
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What are the two major advantages of probability sampling?
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What is a (target) population? (To answer this question, you can include or exclude the word “target”.)
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What is a sampling frame?
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What is a coverage error? What kind of problem does it cause in sampling?
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What is simple random sampling?
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How does stratified random sampling differ from simple random sampling?
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How does cluster sampling differ from simple random sampling?
Part 2)Read the article and answer the questions listed at the bottom of this page:( the pictures uploaded)
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What was the research question examined by the Iowa study?
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What was the independent variable in the study?
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List (or describe) the attributes associated with the independent variable.
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What was the dependent variable in the study?
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List (or describe) the attributes associated with the dependent variable.
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How many cases did they study?
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What was the unit of analysis?
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List one extraneous variable.
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What answer to the research question did the study find?
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