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

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

Quizplus · Accepted Answer

A representative sample is a randomly selected group of subjects that matches the population on important characteristics to ensure that the results of the study can be generalized to the larger population. Volunteer bias refers to the bias that can be introduced when individuals self-select to participate in a study, and is not relevant to selecting a matching sample. Experimental and control groups are specific groups used in experimental research designs and are not related to selecting a representative sample.

A Group of Randomly Selected Subjects for a Study That