摘要
本文证明了来自两个正态总体的两子样未必独立时,两子样方差仍相互独立,说明F检验法中要求两子样独立的条件是不必要的。
In this paper, We prove that two Samples from two noral universes are not independent, but two sample variances are independent. Therefore, in the F -tests the condition that two samples are independent may be deleted.