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How to Use the AVERAGEIF and AVERAGEIFS Functions in Excel

Excel's AVERAGEIF and AVERAGEIF functions let you find the average of a set of data. However, where they differ from the more ...
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Rational Chebyshev Approximations for the Inverse of the Error Function

This report presents near-minimax rational approximations for the inverse of the error function inverf $x$, for $0 \leqslant x \leqslant 1 - 10^{-10000}$, with ...