2014-07-29: provide fairly good approximate results for fractional
degrees of freedom
This screen computes the probability distribution functions and their inverses for four common statistical distributions.
Note: Before using this page for the first time, make sure you read the JavaStat user interface guidelines for important information about interacting with JavaStat pages.
Caution: This page gives completely accurate results when the degrees of freedom (d.f.) are whole numbers, but only approximate results for fractional d.f. The approximations are usually good to at least 2 or 3 decimal places, even for very small d.f., and get better for larger d.f.
Note: p is a "one-tailed" area (from F to infinity)
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