Wheat, Rita D.; Morrison, Donald G.
March 1990
Marketing Science;Spring90, Vol. 9 Issue 2, p162
Academic Journal
Two types of purchase timing models--those which model purchase incidence (whether or not) and those which model interpurchase time (when)--are examined. We show that modelling purchase incidence is almost always preferable to modelling interpurchase time. We also derive upper bound R[sup 2,]'s for purchase incidence models. These R[sup 2]'s serve as useful benchmarks for assessing the goodness-of-fit of empirical choice models.


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