how to plot different simulated data in one graph?

I wanted to run the following hypothesis based on power function. my three run consist of n=10,100 and 1000 and i want them to be on a single plot. can anyone help me out here. i know that hold will do this however, i will be losing my first run plot then.

*function vartest2_power;

nsimul=1000; % Number of repeated experiments

n=10; % Sample size

s=1+(0:0.1:1); % Values for the standard deviation of y

for i=1:length(s)

% Simulate x from a N(0,1) and y from a N(0,s) distribution

x=randn(n,nsimul);

y=s(i)*randn(n,nsimul);

for j=1:nsimul

h(j)=vartest2(x(:,j),y(:,j)); % Perform F-test

end

rejectrate(i)=sum(h==1)/nsimul; % Calculate rejection probability

end

plot(s,rejectrate)*

Answer 1

[Azzi Abdelmalek]

use hold on