MAINT: stats.pearson3: fix ppf for negative skew #17055
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mdhaber
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defect
mdhaber
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backport-candidate
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It would be good to get this in 1.9.2. |
tupui
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Oct 3, 2022
tylerjereddy
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Oct 5, 2022
tylerjereddy
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Reference issue
Closes gh-17050
What does this implement/fix?
gh-17050 reported that
pearson3.ppfwas incorrect for negative values of skew. The fix is similar to that forcdfin gh-12640 - use the fact thatpearson3.ppf(x, skew) = -pearson3.ppf(1-x, -skew).