Question

Most sample surveys call residential telephone numbers at random. They do not, however, always ask their questions of the person who picks up the phone. Instead, they ask about the adults who live in the residence and choose one at random to be in the sample. Why is this a good idea?

1) To ensure a diverse sample of adults
2) To save time by not asking everyone in the household
3) To avoid bias from only speaking to the person who answered the phone
4) To increase the likelihood of reaching a representative sample

Answer 1

Sampling in surveys is done to ensure accuracy and representativeness of the data collected. Asking about the adults who live in the residence and choosing one at random ensures a diverse and representative sample.

Step-by-step explanation:

Sampling in surveys is done to ensure accuracy and representativeness of the data collected. Asking about the adults who live in the residence and choosing one at random ensures a diverse sample of adults. This helps to avoid bias from only speaking to the person who answered the phone and increases the likelihood of reaching a representative sample. It also saves time by not asking everyone in the household.