On Sep 6, 2010, at 1:13 PM, tamas barjak wrote:
Hello!
I need some help.
How I know it to draw the formula of the poisson distribution?
expr<-expression(P(xi == k) == frac(lambda^k, factorial(k))*e^-
lambda) --->
not good
?plotmath
(Do not see factorial as a plotmath "function"
Try:
expr<-expression(P(xi == k) == frac(lambda^k, k*"!")*e^-lambda)
on the screen the " k! " not the Poisson Formula, but "factorial(k)"
Thanx!
-- David.
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