How does the blood test analogy explain sampling

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Reference no: EM134042971

Assignment:

Base on that video answer these questions

1. According to Scott Keeter, how many participants are needed to construct a sample that can adequately represent the public in political polls? He provides two estimates.

2. How does the Pew Research Center construct a sample that is random? Listen and answer carefully.

3. Under what conditions must Pew weight a poll to maximize its representativeness?

4. How does the blood test analogy explain sampling?

5. According to Keeter, what is the normal margin of error for political polls?

6. According to Keeter, who tends to be overrepresented among Pew poll participants? Who tends to be underrepresented?

Reference no: EM134042971

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