Y. Fujikoshi, AN ASYMPTOTIC-EXPANSION FOR THE DISTRIBUTION OF HOTELLING T-2-STATISTIC UNDER NONNORMALITY, Journal of Multivariate Analysis, 61(2), 1997, pp. 187-193
In this paper we obtain an asymptotic expansion for the distribution o
f Hotelling's T-2-statistic T-2 under nonnormality when the sample siz
e is large. In the derivation we find an explicit Edgeworth expansion
of the multivariate t-statistic. Our method is to use the Edgeworth ex
pansion and to expand the characteristic function of T-2. (C) 1997 Aca
demic Press.