Question about sampling bias in a survey on sports preferences.

A slide titled "Unbiased and Biased Samples" with a question about calling every 100th household in a telephone book and a table listing sports types: Baseball, Basketball, Football, Lacrosse, Soccer.

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Show Answer Key & Explanations Step-by-step solution for: 7-3F Unbiased and Biased Samples - ppt video online download

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- No, you should not assume the results would represent all of the people in the viewing area.
- The sample is biased because it only includes households with landline phones listed in a telephone book, which excludes people who use only mobile phones, have unlisted numbers, or don’t have phones at all.
- This method overrepresents certain demographics (e.g., older adults, those with stable residences) and underrepresents others (e.g., younger people, renters, low-income households).
- An unbiased sample must reflect the entire population being studied; selecting every 100th household from a phone book fails to do so.

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