[Rd] qpois documentation (PR#13743)

From: <Jerry.Lewis_at_biogenidec.com>
Date: Tue, 02 Jun 2009 13:10:09 +0200 (CEST)


Full_Name: Jerry W. Lewis
Version: 2.9.0
OS: Windows XP Professional
Submission from: (NULL) (166.186.168.103)

Quantiles for discrete distributions are consitently implemented, but inconsitently documented. Help for qpois incorrectly states in the Details section that
"The quantile is left continuous: qgeom(q, prob) is the largest integer x such
that P(X <= x) < q."
which disagrees with the implementation; it should read
"The quantile is defined as the smallest value x such that F(x) >= p, where F
is the distribution function."
Also, this definition should be added to Help for qhyper.



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