Analysis of interpurchase intervals of cars using truncated and censored data
(English)Report (Other academic)
Knowledge of consumer behaviour is important to companies and governmental authorities for, e.g, planning purposes. In this paper the relationship between interpurchase intervals of cars and demographic and economic characteristics of the car owners are analysed. Data was collected within a panel study of households in Sweden. Due to the study design, data is left truncated and right censored. The degree of censoring was almost 80 percent which made estimation of the models challenging. Results show that income and age of the car owners are important for the length of the interpurchase intervals of cars. Moreover, the results imply that models recommended for interpurchase intervals of durable goods in general might be inappropriate for interpurchase intervals of cars. A generalized gamma distribution, which embeds several distributions, is used to model interpurchase intervals. Semiparametric models are also considered.
IdentifiersURN: urn:nbn:se:umu:diva-4607OAI: oai:DiVA.org:umu-4607DiVA: diva2:143770
Ändrat till publicerad 21/8-092005-05-162005-05-162009-08-21Bibliographically approved