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Definition

A gamma distribution—or negative binomial distribution (NBD)—is a probability mixture model which is used to mathematically describe the frequency and timing of product purchases and is primarily applied to frequently purchased consumer goods.[1] See the entry for "Gamma distribution" on Wikipedia for more detailed information.

References

  1. ^ American Marketing Association. Dictionary. <https://www.ama.org/resources/Pages/Dictionary.aspx> (cited 30 June 2015).

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