A sample in which every member of the population has an equal chance of being selected for inclusion in the study is a _____ sample.
A) convenience
B) representative
C) volunteer
D) random

Question

Quizplus · Accepted Answer

A random sample ensures every member of the population has an equal chance of being selected, thus reducing bias and increasing the representativeness of the sample. Convenience samples are only composed of easily accessible individuals, while volunteer samples only include individuals who choose to participate, both of which can introduce bias. A representative sample aims to match the characteristics of the population being studied, but the method for selection is not specified and may not be random.

A Sample in Which Every Member of the Population Has