Generate 10,000 random numbers and create a histogram. Thehistogramfunction automatically chooses
an appropriate number of bins to cover the range of values inxand show the shape of the
underlying distribution.
x = randn(10000,1); h = histogram(x)
randn(100001)产生10 000个均值
0，标准差
1的正态分布随机数。
原文：https://www.cnblogs.com/yibeimingyue/p/13416042.html