The possible problems involved in using a telephone book to generate a sample include
A)the list not being up to date.
B)the exclusion of unlisted numbers.
C)the existence of nonworking numbers.
D)all of these.
E)the list not being up to date and the exclusion of unlisted numbers.

Question

Quizplus · Accepted Answer

All of the possible problems listed could occur with using a telephone book to generate a sample. The list may not be up to date, as people can move or change their phone numbers without updating the directory. Unlisted numbers would be excluded from the sample, and nonworking numbers could lead to a biased sample if they are not removed. Therefore, using a telephone book as a sampling method may not result in a representative sample.

The Possible Problems Involved in Using a Telephone Book to Generate