MATLAB: How to the average of specific subsets on a matrix

meanselection matrix subsets

I have a matrix 96×1 and I want to do the average of the first 3 values, and then the average of the next 3 and so on until the end.

>> M = rand(96,1); % your data matrix
>> mean(reshape(M,3,[]),1)

Mean every 4 indices of the third dimension

A=rand(360,181,360);
[m,n,p] = size(A);
m = mean(permute(reshape(A,m,n,4,[]),[1 2 4 3]),4)

You won't be able to use zscore in a one-liner:

"Z = zscore(X) returns a centered, scaled version of X, the same size as X"

Doing it manually:

(SP_MovAvg(:,c) - mean(SP_MovAvg(:,c-251:c),2))./std(SP_MovAvg(:,c-251:c),1,2)