A random sample of a large group of people is one in which
A) the number of people included in the sample is determined by chance.
B) every person in the large group has an equal chance of being included in the sample.
C) personality differences among those in the sample are practically nonexistent.
D) all of these situations are true.

Question

Quizplus · Accepted Answer

A random sample is defined by every member of the population having an equal chance of being selected, which ensures that the sample represents the population as closely as possible. Choices A and C do not accurately describe the essential characteristics of a random sample.

A Random Sample of a Large Group of People Is