"Equivalent Sample Size" and "Equivalent Degrees of Freedom" Refinements for Inference Using Survey Weights Under Superpopulation Models
本文提出在超总体模型下使用调查权重进行推断时，对等效样本量和等效自由度的改进方法，适用于处理复杂调查数据的统计推断。
Richard F. Potthoff, Max A. Woodbury, Kenneth G. Manton, "Equivalent Sample Size" and "Equivalent Degrees of Freedom" Refinements for Inference Using Survey Weights Under Superpopulation Models, Journal of the American Statistical Association, Vol. 87, No. 418 (Jun., 1992), pp. 383-396