________ 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) Double sampling
B) Stratified sampling
C) Systematic sampling
D) Sequential sampling

Question

Quizplus · Accepted Answer

Double sampling involves selecting a smaller sample from within a larger sample, where the larger sample contains all possible elements. It can be useful when a comprehensive sampling frame is not available but some information about the elements is known. The first phase involves selecting a smaller sample from the known information, and the second phase involves using the information from the first phase to select a final sample. This can improve the accuracy of the sample selection process. Stratified sampling involves dividing the population into subgroups based on specific characteristics and then sampling from each subgroup. Systematic sampling involves selecting every nth element from a list or sequence. Sequential sampling involves conducting additional sampling based on the results of previous samples, which may not be relevant in this case.

________ Can Be Useful When No Sampling Frame Is Readily