Econometrica Vol. 40 No. 6 1972
Proportionate Variances and the Identification Problem
Abstract
1. TO BE CLEAR from the beginning, this note does not provide practical aids to identification; the information is very unlikely to be available. Rather, this paper serves an expository purpose, that of seeking to clarify two ideas: first, multiple-identification, by presenting and analyzing an example within a linear system, and second, Working's and Fisher's ideas on relative variances as identification aids, by showing the consequences of knowing that one variance is a specific large multiple of another. Along the way we provide a correction to the econometrics literature.
- DOI
- 10.2307/1913861
- Volume
- 40
- Issue
- 6
- Pages
- 1147
- Sources
- bibtex:phds-export.bib crossref openalex