Which of the following sample types should you always regard as unreliable?
A) voluntary response samples
B) simple random samples
C) stratified samples
D) cluster samples

Question

Quizplus · Accepted Answer

Voluntary response samples are unreliable because they are self-selected by individuals who choose to participate. This type of sample tends to be biased because those who respond may have strong opinions or feelings on the topic, leading to an overrepresentation of certain groups or opinions.

Which of the Following Sample Types Should You Always Regard