Wednesday, March 22, 2006
Re: st: functions for computing prob
Lei Xuan wrote:
> I am computing probabilities for t-test and z-test. > I want to know if the functions -tprob- and -normprob- are out-of-date > since no help files explain these functions. Are -ttail(n,t)- and -normal(z) > > right functions to compute probs?
see -help density functions- or -help functions-
Yes, the cumulative normal density function, normprob(), still works but is out of date, no longer documented, and has been replaced by normal(). Am not sure whether tprob() ever existed? - doesn't seem to work and is not documented in any case. ttail(n,t) is documented under help for functions.
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