线性等值公式的误差估计
Estimation of Standard Errors about Linear Equating
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摘要: 本文给出测验等值中等组设计、平衡随机组设计和铆测验随机组设计下的线性等值公式的渐近方差,从而得到一般情况下三种设计的线性等值公式的误差估计.同时讨论了与估计精度有关的几个问题。Abstract: In this paper, asymptotic variances of linear equating were obtained for an equivalent-groups design, a counterbalanced random-groups design, and an anchor- test- random-groups design,and the standard errors of linear equating were estimated under these designs. Some problems associated equating precision were discussed.