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我试图通过比较三个RV和正态分布之和的直方图来在matlab中证明CLT.

这是我的代码:

clc;clear;
len = 50000;

%y0 : Exponential Distribution
lambda = 3;
y0=-log(rand(1,len))./lambda;


%y1 :  Rayleigh Distribution
mu = 0;
sig = 2;
var1 = mu + sig*randn(1,len);
var2 = mu + sig*randn(1,len);
t1 = var1 .^ 2;
t2 = var2 .^ 2;
y1 = sqrt(t1+t2);


% %y2: Normal Distribution
y2 =  randn(1,len);


%y3 : What result excpected to be:
mean0 = (sum(y0)+ sum(y1)+ sum(y2)) / (len * 3);%how do I calculate this?
var0 =  1;%how do I calculate …