请教：一个probability问题。如果X,Y,Z都是normal distribution的random variable。那么sqrt(X*X+Y*Y+Z*Z)是什么distribution?
Chi-Squared吗？[zzjbug (6-15 14:18, Long long ago)] [ 传统版 | sForum ][登录后回复]1楼

Thought Chi-square is a statistical test?How can be distribution be a statistical test? I'm confused...[Flying (6-15 14:51, Long long ago)] [ 传统版 | sForum ][登录后回复]2楼

(引用 Flying:Thought Chi-square is a statistical test?How can be distribution be a statistical test? I'm confused...)Nope... Chi-square is a kind of statistical distribution.Statistical distribution like Chi-square, T and F distributions can be used for hypothesis evaluation, the corresponding test are called Chi-square, T and F test.[香陵居士 (6-16 0:45, Long long ago)] [ 传统版 | sForum ][登录后回复]3楼