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Norwegian

A Note on the Weibull Distribution and Time Aggregation Bias

Link to article:

[PDF]

Authors:

Røed, Knut og Tao Zhang

Year:

2000

Reference:

Memorandum
Number in series: 23

Summary

The application of continuous time Weibull models on discrete unemployment duration data may produce bias in the estimated shape of the hazard rate. 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.

JEL:

C41

Keywords:

Unemployment duration, Weibull model, Time aggregation bias

Project:

Oppdragsgiver: Norges forskningsråd
Oppdragsgivers prosjektnr.:
Frisch prosjekt: 1203 - Sorting, exposed groups and labour market programmes

Financing:

Norges forskningsråd