Question

What is the difference between double sampling and multi stage sampling?

Answer 1

Answer:

Double sampling is used in some situations where making use of an auxiliary variable is desirable. ... In multi-stage sampling, different types of sampling units are sampled at different stages, while in multiphase sampling, we are concerned with the similar type of sampling units, at each phase.

Explanation:

Multiphase sampling must be distinguished from multistage sampling since, in multiphase sampling, the different phases of observation relate to sample units of the same type, while in multistage sampling, the sample units are of different types at different stages.

In the two-stage sampling design the population is partitioned into groups, like cluster sampling, but in this design new samples are taken from each cluster sampled. ... Two-stage sampling is used when the sizes of the clusters are large, making it difficult or expensive to observe all the units inside them.

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Answer 2

Double sampling is used in some situations where making use of an auxiliary variable is desirable. ... In multi-stage sampling, different types of sampling units are sampled at different stages, while in multiphase sampling, we are concerned with the similar type of sampling units, at each phase.

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