A Sample Is Chosen for a Study on Average Heights

A sample is chosen for a study on average heights and weights of adult males in a major city. The researcher uses a convenience sampling method, enacting this by going door-to-door in a neighborhood in St. Paul, Minnesota. Unbeknownst to the researcher, this neighborhood is very rich in persons of Norwegian descent, who coincidentally are the tallest Caucasians on the planet. What type of sampling error is most likely to occur due to this sampling method?

A) Random variance
B) Refusal rate
C) Systematic bias
D) Type II error

Correct Answer:

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