In this paper we consider stochastic purchase timing models used in marketing for low-involvement products and show that important characteristics of those models are easy to compute. As such these calculations are based on an elementary probabilistic argument and cover not only the well-known condensed negative binomial model but also stochastic purchase timing models with other interarrival and mixing distributions.

Econometric Institute Research Papers
Erasmus School of Economics

Frenk, H., & Zhang, S. (1997). On Purchase Timing Models in Marketing (No. EI 9720/A). Econometric Institute Research Papers. Retrieved from