关于F—分布的注记

Notes on F-Distributions

本文证明了两个正态子样未必独立,但满足其它较弱条件时,两子样方差仍相互独立,说明了F—检验中要求两子样独立的条件是不必要的.

In the paper we pove that when two normal samples need not be indepent,the two samples variances which satisfy weak condition may be independent.There fore,in theF-tests the condition that two samples are independent is not necessary.