To overcome one of the shortcomings of telephone surveys due to unlisted telephone numbers:
A) survey takers purchase mail lists of unlisted telephone number subscribers.
B) survey takers employ random digit dialing facilities.
C) survey takers contact telephone companies for a list of unlisted telephone numbers.
D) survey takers purchase lists of unlisted telephone numbers from magazine subscribers.
E) survey takers go door to door and identify the unlisted telephone subscribers.

Question

Quizplus · Accepted Answer

Employing random digit dialing facilities is the most effective method to reach unlisted telephone numbers as it generates numbers at random, which may belong to unlisted phone numbers, and eliminates any bias in selecting numbers manually. Purchasing mail lists or lists of magazine subscribers may not necessarily contain unlisted telephone numbers, and contacting telephone companies for a list of unlisted numbers may be prohibited by privacy laws. Going door to door may be time-consuming and expensive. Therefore, random digit dialing is the best choice.

To Overcome One of the Shortcomings of Telephone Surveys Due