Quantile Regression Estimates of Confidence Intervals for WASDE Price Forecasts

Olga Isengildina-Massa, Scott Irwin and Darrel L. Good
Authors registered in the RePEc Author Service: Olga Isengildina Massa

Journal of Agricultural and Resource Economics, 2010, vol. 35, issue 3, 23

Abstract: This study uses quantile regressions to estimate historical forecast error distributions for WASDE forecasts of corn, soybean, and wheat prices, and then compute confidence limits for the forecasts based on the empirical distributions. Quantile regressions with fit errors expressed as a function of forecast lead time are consistent with theoretical forecast variance expressions while avoiding assumptions of normality and optimality. Based on out-of-sample accuracy tests over 1995/96–2006/07, quantile regression methods produced intervals consistent with the target confidence level. Overall, this study demonstrates that empirical approaches may be used to construct accurate confidence intervals for WASDE corn, soybean, and wheat price forecasts.

Keywords: Crop Production/Industries; Demand and Price Analysis (search for similar items in EconPapers)
Date: 2010
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:ags:jlaare:99120

DOI: 10.22004/ag.econ.99120

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