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9 lines
206 B
Text
9 lines
206 B
Text
@n += 1;
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@sumx += $x;
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@sumx2 += $x**2;
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end {
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@mean = @sumx / @n;
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@var = (@sumx2 - @mean * (2 * @sumx - @n * @mean)) / (@n - 1);
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@stddev = sqrt(@var);
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emitf @n, @sumx, @sumx2, @mean, @var, @stddev
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}
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