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On Wed, 19 Jan 2000 P.J.Wells@open.ac.uk wrote:
> In the meantime, me not being a real mathematician or
> physicist, can Paul say how many d.f.s one needs in, e.g.,
> an ideal gas?
Not sure about ideal gases, but the rule of thumb in most
statistical contexts is that once you've got more than 30
degrees of freedom you can pretty much help yourself to results
that obtain with infinite df.
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