________ can be useful when no sampling frame is readily available for selecting final sampling units but when the elements of the frame are known to be contained within a broader sampling frame.
A)Stratified sampling
B)Double sampling
C)Sequential sampling
D)Systematic sampling

Question

Quizplus · Accepted Answer

Double sampling involves using a preliminary sample to identify the elements to be included in the final sample. This can be useful when a sampling frame is not readily available, but when information is available about a broader frame within which the elements are believed to be contained. The preliminary sample is used to identify a smaller set of elements that can be feasibly sampled or enumerated, which are then used to inform the selection of the final sample. Double sampling can improve the accuracy of the final sample by reducing the potential for bias that may arise from using an incomplete or inaccurate sampling frame.

________ Can Be Useful When No Sampling Frame Is Readily