Statistics Dictionary

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Neyman Allocation

Neyman allocation is a sample allocation method that may be used with stratified samples. The purpose of the method is to maximize survey precision, given a fixed sample size. With Neyman allocation, the "best" sample size for stratum h would be:

nh = n * ( Nh * Sh ) / [ Σ ( Ni * Si ) ]

where nh is the sample size for stratum h, n is total sample size, Nh is the population size for stratum h, and Sh is the standard deviation of stratum h.

Neyman allocation is actually a special case of optimal allocation .

See also:   Tutorial: Sample Size Within Strata