One problem with using random digit dialing to get a representative sample of households in a city is that
A) the method can only be used to get a sample for the whole country.
B) households with multiple telephones on the same line will be over-represented.
C) households with multiple phone numbers will be over-represented.
D) households with unlisted phone numbers will not be represented.

Question

Quizplus · Accepted Answer

Households with multiple phone numbers have a higher chance of being selected, leading to over-representation in the sample.

One Problem with Using Random Digit Dialing to Get a Representative