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A Note on the Weibull Distribution and Time Aggregation Bias

Forfattere:

Røed, Knut and Zhang, Tao

År:

2002

Referanse:

Applied Economics Letters

Vol. 9, No.7, 469-472

Summary

The application of continuous time Weibull models on discrete unemployment duration data may result in severely biased baseline estimates. The bias can be substantial even for weekly duration data, and it is seriously aggravated if the Weibull model is erroneously mixed with a Gamma distribution for unobserved heterogeneity.

Nøkkelord:

Unemployment duration, Weibull model, Time aggregation bias

JEL:

C41

Prosjekt info:

Oppdragsgiver: Norges forskningsråd
Oppdragsgivers prosjektnr.:
Frisch prosjekt: 1203 - Sortering, utsatte grupper og arbeidsmarkedstiltak

Finansiering:

Forskningsrådet