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sdevn The sdevn function returns the standard deviation of a general lua table that may contain a multi-dimensional array or a mixture of numbers, strings, named keys, and sub-tables. Only numeric values found in the table are used in the calculation. The related sdev function calculates the mean of a 1-dimensional array, CImage, or list of numbers. Since an array is a specific type of table that contains only numbers or sub-tables, this function can also be used for arrays. SyntaxnStdDev = sdevn( tbl )
ExamplesThe following script returns the standard deviation of a table containing 1 million random numbers.
The next example computes the standard deviation of an ugly, complex table:
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