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 May 14th, 2014, 09:45 AM #1 Newbie     Joined: Apr 2014 From: Manama, Bahrain Posts: 18 Thanks: 1 Math Focus: Probability and Statistics :P Notations for PMF & PDF of binomial distribution Hello everyone (: I know that in general, PMF is represented by fX(x) & CDF is represented by FX(x). But in the Wikipedia page for binomial distributions, it shows that's a binomial distribution's PMF is represented by f(x; n, p) and its CDF by F(x; n, p). I understand the intention behind using these notations but I find it rather 'informal'. Which one of these is the more precise notation? Can I just go with the general notations for PMFs and CDFs? Thank you (: Last edited by Sid; May 14th, 2014 at 09:51 AM.
 May 14th, 2014, 01:34 PM #2 Global Moderator   Joined: May 2007 Posts: 6,686 Thanks: 661 The general notation is f and F. However for particular families of distribution such as binomial, Poisson, or normal, the notation includes parameters specifiying which member of the family is being used. Thanks from Sid

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