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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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7
Task/Cumulative-standard-deviation/MATLAB/cumulative-standard-deviation-1.m Normal file
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x = [2,4,4,4,5,5,7,9];
n = length (x);
m = mean (x);
x2 = mean (x .* x);
dev= sqrt (x2 - m * m)
dev = 2

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Task/Cumulative-standard-deviation/MATLAB/cumulative-standard-deviation-2.m Normal file
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m = cumsum(x) ./ [1:n]; % running mean
x2= cumsum(x.^2) ./ [1:n]; % running squares
dev = sqrt(x2 - m .* m)
dev =
0.00000 1.00000 0.94281 0.86603 0.97980 1.00000 1.39971 2.00000

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Task/Cumulative-standard-deviation/MATLAB/cumulative-standard-deviation-3.m Normal file
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function stdDevEval(n)
disp(sqrt(sum((n-sum(n)/length(n)).^2)/length(n)));
end