Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-27T18:07:06.286Z Has data issue: false hasContentIssue false

Strong Consistency of Regression Quantiles and Related Empirical Processes

Published online by Cambridge University Press:  18 October 2010

Gilbert W. Bassett
Affiliation:
University of Illinois at Chicago
Roger W. Koenker
Affiliation:
University of Illinois at Champaign–Urbana

Abstract

The strong consistency of regression quantile statistics (Koenker and Bassett [4]) in linear models with iid errors is established. Mild regularity conditions on the regression design sequence and the error distribution are required. Strong consistency of the associated empirical quantile process (introduced in Bassett and Koenker [1]) is also established under analogous conditions. However, for the proposed estimate of the conditional distribution function of Y, no regularity conditions on the error distribution are required for uniform strong convergence, thus establishing a Glivenko-Cantelli-type theorem for this estimator.

Type
Articles
Copyright
Copyright © Cambridge University Press 1986

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Bassett, G. W. & Koenker, R.. An empirical quantile function for linear models with iid errors. Journal of the American Statistical Association 11, (1982): 407415.Google Scholar
2. Billingsley, P.Probability and Measure. New York: Wiley, 1979.Google Scholar
3. Hardy, G. H., Littlewood, J. E., & Polya, G.. Inequalities. Cambridge: Cambridge University Press, 1967.Google Scholar
4. Koenker, R. & Bassett, G. W.. Regression Quantiles. Econometrica 46, (1978): 3350.CrossRefGoogle Scholar
5. Koenker, R. & Bassett, G. W.. Robust Tests for Heteroscedasticity Based on Regression Quantiles. Econometrica 50, (1982): 4361.CrossRefGoogle Scholar
6. Koenker, R. W. & Bassett, G. W.. Four (Pathological) Examples in Asymptotic Statistics. The American Statistician 38, (1984): 201212.Google Scholar
7. Portnoy, S. Tightness of the sequence of empirical cdf processes defined from regression fractiles. In Franke, J., Hardle, W., and Martin, D., (eds.) Robust and Non-linear Time-Series Analysis. New York: Springer-Verlag, 1983.Google Scholar
8. Rockafeller, R. T.Convex Analysis. Princeton: Princeton University Press, (1970).CrossRefGoogle Scholar
9. Weisberg, S.Comment on a Paper of McDonald and White. Journal of the American Statistical Association 75, (1980): 2831.Google Scholar