Parameters for negbinomial Function?

07162016, 10:02 PM
Post: #1




Parameters for negbinomial Function?
I do not understand the description of the negbinomial function in the Help system. My understanding of this probability mass function is that it provides the probability of r successes out of x trials when the probability of a success is equal to p. The HP Prime computation is P(X=x) = COMB(x1,r1)*(p^r)*(1p)^(xr). I defined a user function this way and confirmed its results.
I want to use the builtin function negbinomial(n,k,x) but I do not understand the parameters. How do n, k, and x here relate to the x, r, and p above? Thanks! 

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Parameters for negbinomial Function?  mark4flies  07162016 10:02 PM
RE: Parameters for negbinomial Function?  parisse  07172016, 06:49 AM

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