A Comment on the Proper Use of Residuals in Patell's Squared Unexpected Return Statistic.
评论Stice(1991)在计算平方意外收益的Z统计量时未区分残差与预测误差，阐明两者区别及其重要性。
Abstract Comments on the failure of Earl K. Stice (1991) to distinguish between residuals and forecast errors in computing Z-statistics derived from squared unexpected returns. Meaning of residual; Distinction of residual from forecast error; Importance of the distinction between residuals and forecast errors.