A generalized negative binomial (GNB) distribution with an additional parameter β has been obtained by using Lagrange's expansion. The parameter is such that both mean and variance tend to increase or ...

For binomial and Poisson distributions, the scale parameter has a value of 1. The variance of Y is for the binomial distribution and for the Poisson distribution. Overdispersion occurs when the ...

The binomial distribution is an important discrete distribution. It gives the probability of the number of "successes," in a sequence of n independent binary trials. This applet allows users to drag ...

Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 19, No. 3 (1970), pp. 240-250 (11 pages) A model for consumer purchasing behaviour is proposed which is based on the ...