As part of a statistics project Charlie would like to collec

As part of a statistics project, Charlie would like to collect data on household size in his city. To do so, he asks each person in his statistics class for the size of their household and reports the results of a simple random sample. However, this is not a simple random sample. Why?

Charlie did not use any randomization; he took a convenience sample.

Charlie did not use a random number table to randomize the order in which he collected the students\' responses, so the sample cannot be random.

In this investigation of household size, each household represents a case. Charlie incorrectly sampled individuals instead of households.

Both (a) and (c) are correct.

Answers (a), (b), and (c) are all correct.

Solution

OPTION A: Charlie did not use any randomization; he took a convenience sample.

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Here, it is \"convenient\" to interview your classmates because they are near you. So, it is not a simple random sample.