Repeat‐Buying and the Generalized Inverse Gaussian–Poisson Distribution

H. S. Sichel

Journal of the Royal Statistical Society Series C, 1982, vol. 31, issue 3, 193-204

Abstract: In this article the repeat‐buying theory, as originally introduced by Ehrenberg, Chatfield and Goodhardt, has been extended to include, for the mixing of the average purchase levels of individual households, a wider family of distributions, of which the traditional gamma is just a special case. Examples are presented for which the Negative Binomial distribution performs poorly but for which the new model gives an adequate representation of the observed facts.

Date: 1982
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