jiachunyang1988 发表于 2014-12-1 21:13 
看的不是很明白,括号你的字母代表什么呢?
以生成服从标准正态分布的3个随机数,并重复这一过程5次为例:
> replicate(5, rnorm(3))
[,1] [,2] [,3] [,4] [,5]
[1,] -0.2098800 -0.2891009 -1.5106925 -0.2941538 0.1072428
[2,] 0.1974659 -1.4352968 1.9620301 -0.5745457 -0.6394548
[3,] -0.3012112 0.5387016 -0.6761314 -0.4704064 0.2069635