Adjusting for Beta Bias: An Assessment of Alternate Techniques: A Note
测试了五种调整贝塔估计偏差的技术，发现它们都能减少偏差，但最佳情况下减少幅度仅为29%。
This paper tests the effectiveness of techniques proposed by: Scholes-Williams; Dimson; Fowler, Rorke, and Jog; and Cohen, Hawawini, Maier, Schwartz, and Whitcomb to control for bias in beta estimates from thin trading and price adjustment delays. Each technique produces beta estimates that reduce the amount of this bias, but the amount of reduction in the best case is only 29%.