One key feature of random samples:
A)must make substitutions whenever necessary.
B)must use a selection process based on the researcher's preference.
C)must identify and pick a particular sampling element,rarely using substitutions.
D)must select the exact elements in the sample.

Question

Quizplus · Accepted Answer

Random samples involve identifying and selecting a particular sampling element without substitutions. This ensures that the sample is representative of the population and minimizes bias. Using a selection process based on the researcher's preference (B) or selecting exact elements in the sample (D) can introduce bias and compromise the validity of the sample. Making substitutions (A) is typically not recommended in random sampling.

One Key Feature of Random Samples