Why do SciPy stats return very small but very high precision numbers?

Vicki Brown <[email protected]> Tue, 15 Oct 2019 11:53:33 -0700
Newsgroups gmane.comp.python.scientific.user
Message-ID <[email protected]>
Sometimes, I see results like this:

LeveneResult(statistic=1233.9270599281986, pvalue=6.212186164025708e-269) 

Is it even realistic to claim a value that is this small? (6.212 e-269)?

Other times, a function just returns 0.0.

Can someone point me to an explanation of how and why the functions decide o return 0 ("fer sure") vs "almost but not exactly 0, but close enough")

-- Vicki

Vicki Brown
cfcl.com/vlb

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