Which of the following is usually the most expensive way to collect data from consumers?
A) Telephone surveys
B) E-mail surveys
C) Online surveys
D) Mail surveys
E) Personal interviews

Question

Quizplus · Accepted Answer

Personal interviews require hiring trained personnel to conduct the interviews, travel expenses, and other associated costs, making them the most expensive method of collecting data from consumers.

Which of the Following Is Usually the Most Expensive Way