Which of the following is true about a probability sample?
A) The observation method is used to select people who appear most willing to participate.
B) Convenience is the key determinant of who participates.
C) A researcher uses personal judgment to select participants.
D) Every member of the population is included in the sample.
E) Each member of the population has some known chance of being included in the sample.

Question

Quizplus · Accepted Answer

A probability sample is a sampling technique in which each member of the population has some known chance of being included in the sample. This ensures that the sample is representative of the population and allows for valid statistical inferences to be made. The other answer choices (A, B, and C) describe non-probability sampling techniques, which may introduce bias into the sample selection process. Option D, while technically representative, is usually impractical or impossible to achieve in most research studies.

Which of the Following Is True About a Probability Sample