Re: [Gretl-users] The "invcdf" function -Correction needed in Help?
Thanks Sven , your explanations were helpful.
As regards the invcdf function, according to Help, the invcdf function
can be used for both the Binomial and the Poisson distributions. But it
indeed seems not to work for either, I tried it for various parameter
values.
So perhaps the Help should be corrected?
Alecos Papadopoulos
Athens University of Economics and Business, Greece
Department of Economics
cell:+30-6945-378680
fax: +30-210-8259763
skype:alecos.papadopoulos
On 16/10/2014 19:00, gretl-users-request(a)lists.wfu.edu wrote:
> >Now, the function
> >invcdf(B, prob, 1, 0.05)
> >returns "NA"
A CDF for discrete variables is not strictly increasing and thus not
invertible. This could be the rationale for NA. Perhaps alternative
conventions could be used for invcdf(), but you would have to argue that
it's useful or necessary.
hth,
sven