A Note on the Weibull Distribution and Time Aggregation Bias
Link to article:
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 forskningsrådOppdragsgivers prosjektnr.:
Frisch prosjekt: 1203 - Sorting, exposed groups and labour market programmes
Financing:
Norges forskningsråd