Article ID: | iaor1989960 |
Country: | United Kingdom |
Volume: | 23 |
Issue: | 3 |
Start Page Number: | 309 |
End Page Number: | 315 |
Publication Date: | Sep 1989 |
Journal: | Journal of Transport Economics and Policy |
Authors: | Barmby Tim, Doornik Jurgen |
Keywords: | statistics: distributions |
The Negative Binomial distribution, a generalisation of the Poisson distribution, is found to be useful in constructing a statistical model of trip frequency. It indicates that expenditure is a more important variable than the number of individuals in the household.