IRT true score equating and IRT observed score equating in common-item non-equivalent group design based on the item response theory were compared.

研究采用锚测验非等组设计，对IRT真分数等值和IRT观察分数等值两种方法进行了比较研究。

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It converts the scores of the given testees' population on test form X into that of the observed score distribution on test form Y, so it is an observed score equating method.

核等值法通过转换给定考生总体在X卷上的观察分分布，得到Y卷上的观察分分布，因此其本质是观察分等值。

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In large scale standardized tests, the test scores, before release, have to undergo a series of transformation processes, including score weighting, score equating, and score normalization, etc.

为了使分数带有大量信息，便于用户使用，大规模标准化考试在最终报道考试成绩前，分数要经过加权处理、等值处理、正态化转换等一系列转换过程。

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