摘要
根据煤炭行业的特点,进行基于项目反应原理的计算机测试。实验选用两参数的逻辑斯蒂模型,使用BILOG来模拟数据和参数估计。选择其中30个考试结果进行分析,得出平均能力值θ为1.266 6,呈正态偏易分布,而且相比传统测试长度缩短了39.00%,平均难度系数b为-0.5241属于偏易。结合Bias、RMSD、E 3个指标来看,均表现良好,基本符合预期。
According to the characteristics of coal industry, based on the computer test item response theory. Experiment chooses two parameters of logistic model, USES BILOG to simulate data and parameter estimation. Choose one 30 for exam results for analysis, that the average value of 1.2666 positively ability, modal partial, and compared with the traditional yi distribution test the length has been shortened 39.00%, average difficulty coefficient 0.5241 belong to slant b - easily. Combination, and three indicators, are performed well, basically comply with expectation.
出处
《煤炭技术》
CAS
北大核心
2011年第11期248-250,共3页
Coal Technology
基金
江苏省"十一五"现代教育技术立项研究课题(2010-R-17736)
