A group of randomly selected subjects for a study that matches the population on important characteristics such as age and sex is called __________.
A) volunteer bias
B) a representative sample
C) an experimental group
D) a control group

Question

Quizplus · Accepted Answer

A representative sample is one that matches the characteristics of the population being studied. This helps to reduce the potential for bias in the study results. Volunteer bias refers to the potential for participants in a study to differ from the population in key ways, as they have self-selected to participate. Experimental and control groups are specific groups within a study design, and are not related to the sampling method used to select participants.

A Group of Randomly Selected Subjects for a Study That