Question

The National Cellular Networks Association wishes to estimate the average number of cellular phones owned by U.S. households. They are considering two methods of sampling. For each method, explain if you think it will be subject to selection bias and why, and if you think it will be subject to non-response bias and why. Also, state whether you think each method will result in too small or too large an estimate of the true household average.

The Association will call a random sample of phone numbers in every phonebook during regular business hours and ask how many cellular phones the household owns.

The Association will survey people at the entrance of each ComicCon in the United States between the months of June and August.

Now propose a sampling method of your own that you think will generate a more accurate national average. Explain why you think it is better.

Answer 1

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