Question

I am trying to generate a random sequence of 0s and 1s such that any time a sequence is generated, the probability of 1 is 0.3. I tried the following in Matlab

%%clear all; %%close all;clc; %%(rand(1,10)<=0.3)

The problem is that every time I run this, I get a different proportion of 1s.
Can anyone suggest a better approach?

Answer 1

If you want to have exactely a propotion of 0.3 at the end, you can do:

n=1000; %should be a multiple of 10.
x=[ones(1,n*3/10) zeros(1,n*7/10)];
x=x(randperm(n));

Basically, it creates an array with a 0.3 proportion of 1.

Then, it permutes it randomly.