Summary
The problem of optimum stratification on the auxiliary variablex for equal allocation has been considered. A cum\(f\sqrt \varphi \) rule of finding approximately optimum strata boundaries (AOSB) has been suggested. A numerical investigation into the relative efficiency of equal allocation with respect to optimum allocation has also been made.
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Singh, R., Parkash, D. Optimum stratification for equal allocation. Ann Inst Stat Math 27, 273–280 (1975). https://doi.org/10.1007/BF02504646
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DOI: https://doi.org/10.1007/BF02504646