# negativeBinomial

## negativeBinomial(mu: number, sigma: number) 🡒 ranvar, pure function

Returns the negative binomial distribution of mean mu and of standard deviation sigma. If the standard deviation is smaller than the square root of the team, then a Poisson distribution of the specified mean is returned instead (hence ignoring the sigma).

table T = with
[| as Mu, as Sigma |]
[|  0.5,  2.0 |]
[|  1.5,  2.0 |]
[|  5.5,  2.0 |]
[|  10.0, 2.0 |]

show table "" a1c4 with
T.Mu
T.Sigma
negativeBinomial(T.Mu, T.Sigma)