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BILOG-MG 软件简介
BILOG-MG 3软件可以随时间的趋势检测和修正参数（DRIFT），可以在两级测试程序中校准和得分的测试，可以应用于潜在能力的估计或水平分布，可以为项目提供插入测试来评估项目的统计数据,但不包括在计算考生的分数(“变种物品”)，符合统计、理论和实证的可靠性，可以展现信息曲线和可靠性对假定的测试形式，可以表达质量红外热成像图形,可以输入Word,Accee等等。
软件简介（英文）
overview
Graphical user interface
● Efficient analysis of binary items including multiple choice or short-answer items scored right, wrong, omitted, or not-presented
● Capable of large scale production analysis, and handling of multiple groups
● Performs item analysis and scoring of any number of subtests or subscales
● Non-equivalent groups equating
● Vertical equating of test forms
● Differential item functioning (DIF)
● Detection and correction for parameter trends over time (DRIFT)
● Calibration and Scoring of tests in two-stage testing procedures
● Estimation of latent ability or proficiency distributions
● Provision for items inserted in tests to estimate item statistics, but not included in calculation of examinee scores ("variant items")
● Item fit statistics, theoretical and empirical reliability
● Information curves and reliabilities for putative test forms
● Presentation quality IRT graphics, can be imported in Word, Access, etc.
● Detailed online HELP documentation includes description of interface, syntax, and examples.
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