In probability samples, the probabilities of each element being included must be
A) known.
B) nonzero.
C) equal.
D) known and equal.
E) known and nonzero.

Question

Quizplus · Accepted Answer

In probability samples, the probabilities of each element being included must be known and nonzero to ensure that every element has a chance of being selected and that the selection process is transparent and measurable.

In Probability Samples, the Probabilities of Each Element Being Included