The two main types of samples used by researchers are ________.
A) reliable and nonreliable
B) probability and nonprobability
C) valid and invalid
D) pure and applied
E) census and non-census

Question

Quizplus · Accepted Answer

Probability samples are those where each member of the population has an equal chance of being selected, whereas nonprobability samples are those where the selection of members is based on nonrandom factors. These are the two main types of samples used by researchers, with probability samples generally being considered more reliable and valid than nonprobability samples.

The Two Main Types of Samples Used by Researchers Are