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

Question

Quizplus · Accepted Answer

Voluntary response samples are considered unreliable because they often suffer from self-selection bias, where individuals choose themselves to participate. This can lead to an unrepresentative sample because those who volunteer might have stronger opinions or characteristics different from the general population.

Which of the Following Sample Types Should You Always Regard