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    <h2>public pure function standard_deviation(x) result(rst)  
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    <p>Computes the sample standard deviation of the values in an array.</p>
<p>The value computed is the sample standard deviation.
<script type="math/tex; mode=display"> s = \sqrt{ \frac{\Sigma \left( x_{i} - \bar{x} \right)^2}{n - 1} } </script>
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