A sample in which every member of a population has an equal chance of being chosen to participate in an experiment is called a(n) _______ sample.
A) analogue
B) stratified
C) in vivo
D) random

Question

Quizplus · Accepted Answer

A random sample ensures that every member of a population has an equal chance of being selected, thus reducing bias and increasing generalizability of findings. Option A (analogue) refers to a sample that is similar to the population but not representative, option B (stratified) involves dividing the population into subgroups and selecting participants from each subgroup, and option C (in vivo) refers to research conducted within a living organism.

A Sample in Which Every Member of a Population Has