Why can we never be sure that a sample represents a population?
A)Random selection never works the way it is supposed to work.
B)Samples created by random selection are almost never perfectly representative.
C)A random sample may poorly represent a population,or it may accurately represent a different population.
D)If selection is conducted correctly,samples always accurately represent the populations they are supposed to represent.

Question

Quizplus · Accepted Answer

A random sample may be subject to sampling error and may not perfectly represent the population from which it was drawn. Additionally, the chosen sample may be representative of a different population than the one of interest, leading to incorrect conclusions being drawn. Therefore, we can never be sure that a sample completely represents a population.

Why Can We Never Be Sure That a Sample Represents