If you tried to phone someone who was selected to participate in a telephone survey, and you couldn't reach that person the first time, what should you do?
A)Give up and select another person at random to take their place in the sample.
B)Keep that person in the sample, and keep trying to get a hold of them.
C)Remove that person from the sample and don't replace them.
D)Call your neighbor and ask them to participate in the survey instead - at least you know they're home.

Question

Quizplus · Accepted Answer

Keeping the person in the sample and continuing to try to reach them is the best option because it maintains the representativeness of the sample and reduces the risk of introducing bias. It is also possible that the person may eventually be reached and be able to participate in the survey.

If You Tried to Phone Someone Who Was Selected to Participate