To avoid unknown, systematic factors that may bias the results of an experiment, the experimenter should select a _________ sample from a population and use controlled conditions.
A) wise
B) small
C) random
D) single

Question

Quizplus · Accepted Answer

A random sample ensures that all individuals in the population have an equal chance of being selected for the study, minimizing potential bias. Controlled conditions help to eliminate external factors that could influence the results. A small sample size may not be representative of the population, while a single sample does not allow for comparison or replication. Wise is not a relevant term in this context.

To Avoid Unknown, Systematic Factors That May Bias the Results