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A Smoothed- Distribution Form of Nadaraya- Watson Estimation

Author

Listed:
  • Ralph W Bailey
  • John T Addison
Abstract
Given observation-pairs (xi ,yi ), i = 1,...,n , taken to be independent observations of the random pair (X ,Y), we sometimes want to form a nonparametric estimate of m(x) = E(Y/ X = x). Let YE have the empirical distribution of the yi , and let (XS ,YS ) have the kernel-smoothed distribution of the (xi ,yi ). Then the standard estimator, the Nadaraya-Watson form mNW(x) can be interpreted as E(YE?XS = x). The smoothed-distribution estimator ms (x)=E(YS/XS = x) is a more general form than mNW (x) and often has better properties. Similar considerations apply to estimating Var(Y/X = x), and to local polynomial estimation. The discussion generalizes to vector (xi ,yi ).
(This abstract was borrowed from another version of this item.)

Suggested Citation

  • Ralph W Bailey & John T Addison, 2010. "A Smoothed- Distribution Form of Nadaraya- Watson Estimation," Discussion Papers 10-30, Department of Economics, University of Birmingham.
    • Handle: RePEc:bir:birmec:10-30
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    References listed on IDEAS

    as
    1. Christopher B. Barrett & Paul A. Dorosh, 1996. "Farmers' Welfare and Changing Food Prices: Nonparametric Evidence from Rice in Madagascar," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 78(3), pages 656-669.
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    3. Engle, Robert F, 1982. "Autoregressive Conditional Heteroscedasticity with Estimates of the Variance of United Kingdom Inflation," Econometrica, Econometric Society, vol. 50(4), pages 987-1007, July.
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    More about this item

    Keywords

    nonparametric regression; Nadaraya- Watson; kernel density; conditional expectation estimator; conditional variance estimator; local polynomial estimator;
    All these keywords.

    JEL classification:

    • C14 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Semiparametric and Nonparametric Methods: General

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