Unlisted telephone numbers creates a special problem for accurate
A)sampling frames.
B)confidence intervals.
C)informants.
D)sampling units.
E)identification

Question

Quizplus · Accepted Answer

Unlisted telephone numbers make it difficult to create accurate sampling frames because they are not included in publicly available phone directories. This can lead to biases in the sample, as individuals with unlisted numbers may have different characteristics than those with listed numbers.

Unlisted Telephone Numbers Creates a Special Problem for Accurate