The rank of accuracy of electric resistance strain gage factor is evaluated according to the sampling theory of large samples or small samples.
本文采用大子样、小子样抽样理论的数理统计方法，评定电阻应变计灵敏系数的精度等级。
The first problem that the system faces: as IRT theory model is imposed severer basic assumptions, so large groups of samples are needed to build the Item bank.
本系统解决的第一个问题是：IRT理论模型有较严苛的基本假设，因此需要建设大样本配合的题库。
Gray theory is recommended for the evaluation of pavement condition when large samples and complete data are not available.
对小样本且信息不完全的路面数据库建议采用灰色理论进行分析。
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