首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Equating Error and Statistical Bias in Small Sample Linear Equating
Authors:Cynthia G Parshall  Pansy Du Bose Houghton  Jeffrey D Kromrey
Institution:American College Testing;National Assessment Institute;University of South Florida
Abstract:A resampling study was conducted to compare the statistical bias and standard errors of nonequivalent-groups linear test equating in small samples of examinees. Sample sizes of 15, 25, 50, and 100 were examined. One thousand samples of each size were drawn with replacement from each of 5 archival data files from teacher subject area tests. For each test, data files from 2 parallel forms were used. Results suggest trivial levels of equating bias even with small samples, but substantial increases in standard errors as sample size decreases. Results were interpreted in terms of applications to testing situations in which small numbers of examinees are available.
Keywords:
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号