Sampling Techniques (ISS (Statistical Services) Statistics Paper III): Questions 29 - 30 of 30

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Question number: 29

» Sampling Techniques » Stratified Random Sampling

Appeared in Year: 2013

Essay Question▾

Describe in Detail

Describe the principles of stratification. Explain how the allocation of sample size in different strata is made.


Principles of stratification:

The principle of stratification is the division of the population in such a way that the elements within a stratum are as similar as possible and the means of the strata are as different as possible.

Auxiliary information (past or some other information) related to the character under study may be used to divide the

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Question number: 30

» Sampling Techniques » Simple Random Sampling With and Without Replacement

Appeared in Year: 2014

Essay Question▾

Describe in Detail

Define linear systematic sampling. Does it give equal probability of selection to all the population units? State the advantages and limitations of systematic sampling. Can a systematic sample be drawn without a physical list of population units? Justify your claim.


Linear systematic sampling:

Linear systematic sampling is a commonly employed technique if the complete and up-to date list of the sampling units is available. This consists in selecting only the first unit at random, the rest being automatically selected according to some predetermined pattern involving regular spacing of units.

Let us Suppose

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