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:Now for normal functions (the kind of functions you mention) P(X = x) = 0.
:Of course, there are things like deltafunctions, but that's not what you're talking about. [[User:Gerbrant|Shinobu]] 16:27, 27 October 2006 (UTC)
Please consider some very important distributions: The Binomial, Poisson, Hypergeometric. You simply MUST use the definition F(x) = P(X <= x) or else all software packages and all tables will be misundestood. PS I am a professor of statistics, so give me some slack here. This is not a matter of delta functions it is a matter of sums of coin flips ... very basic stuff.
== F(x) vs Phi(x) ==
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