1.The research question or purpose of the study guides decisions about the research sampling. How might researchers ensure that they select a sample relevant to the research without introducing a bias?




2.Read the following two studies. Be sure to read the entire articles, not just the abstracts.


Compare the two studies by analyzing their samples. Use the following questions to guide you.

    1. What sampling design is used?
    2. Is the sample size adequate?
    3. How does the sample affect the validity of the conclusions of the study?


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