在EXCEL中应用Rasch模型计算题目难度  

Rasch Model Applied to Item Difficulty Calculation in EXCEL

作　　者：王生军[1] 

机构地区：[1]北京师范大学外文学院,北京100875

出　　处：《安徽广播电视大学学报》2004年第3期120-123,共4页Journal of Anhui Radio & TV University

摘　　要：应用Rasch模型计算出来的题目难度值与被试样本无关,是题目的一项最重要的量化指标。Rasch模型的题目难度的计算在EXCEL程序中能很方便地完成,本文介绍了详细的计算步骤,并讨论了怎样用题目难度值来估算考生的能力水平。Item difficulty value calculated by Rasch Model is independent of the average ability of any examinee sample.The most important characteristic of an item to be determined is its difficulty in a quanti-tative sense.The calculation can be facilitated using the EXCEL Program.The five calculation steps are il-lustrated in this article.The way to match item difficulty value with examinee's ability is also discussed.

关 键 词：EXCEL 表格处理软件 RASCH模型 题目难度值 计算方法 项目反应理论 

分 类 号：TP391.13[自动化与计算机技术—计算机应用技术]