18 lines
522 B
Matlab
18 lines
522 B
Matlab
function [bootsem, mu] = bootstrapmean( x, resample )
|
|
% computes standard error by bootstrapping the data
|
|
% x: vector with data
|
|
% resample: number of resamplings
|
|
% returns:
|
|
% bootsem: the standard error of the mean
|
|
% mu: the bootstrapped means as a vector
|
|
mu = zeros( resample, 1 );
|
|
nsamples = length(x);
|
|
for i = 1:resample
|
|
% resample:
|
|
xr = x(randi(nsamples, nsamples, 1));
|
|
% compute statistics on sample:
|
|
mu(i) = mean(xr);
|
|
end
|
|
bootsem = std( mu );
|
|
end
|