Initial data commit
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x = [2,4,4,4,5,5,7,9];
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n = length (x);
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m = mean (x);
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x2 = mean (x .* x);
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dev= sqrt (x2 - m * m)
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dev = 2
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m = cumsum(x) ./ [1:n]; % running mean
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x2= cumsum(x.^2) ./ [1:n]; % running squares
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dev = sqrt(x2 - m .* m)
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dev =
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0.00000 1.00000 0.94281 0.86603 0.97980 1.00000 1.39971 2.00000
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function stdDevEval(n)
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disp(sqrt(sum((n-sum(n)/length(n)).^2)/length(n)));
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end
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