Regions of positive and unimodal series expansion of the Edgeworth and Gram-Charlier approximations
NORMAN R. DRAPER, DAVID E. TIERNEY
Biometrika · 1972 · Volume 59 · Issue 2
Abstract
SUMMARY Results given by Barton & Dennis (1952) on regions of positive and unimodal series expansion of the Edgeworth and Gram-Charlier approximations to a distribution are re-examined. An apparent discrepancy is found in one of their curves, and some additional calculations are given.
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