Question

Which of the following is typical of the selection of survey participants? They can indicate partiality toward a group. They must be surveyed more than once. They can be selected on purpose by a researcher. They must be representative of the population.

Answer 1

the answer is they must be representative of the population.

Step-by-step explanation:

I took the test and got it right.

Answer 2

Option D

Step-by-step explanation:

In general a sample collected from a set of naturally distributed data set must also follow the bell curve or natural distribution

In other way round it can be said that sample set must have the same characteristics as that of the main set and hence a sample must be representative of the population.

Option D is correct