Test Equating, Scaling and Linking Methods and Applications测验等值，缩放，方法和应用的链接.pptVIP

下载本文档

7
0
约7.58千字
约 19页
2018-06-19 发布于福建
举报
版权申诉

Test Equating, Scaling and Linking Methods and Applications测验等值，缩放，方法和应用的链接.ppt

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

Test Equating, Scaling and Linking Methods and Applications测验等值，缩放，方法和应用的链接

Michelle M. Langer, Ph.D. National Board of Medical Examiners August 30, 2009 Test Equating:Designs, Methods, and Applications to Progress Testing Why is Equating Necessary? Most testing programs administer multiple test forms Impossible to construct test forms that have identical characteristics Comparison of raw scores is unfair to those taking the more difficult form Equating the different forms of a test addresses these issues Why is Equating Necessary? Group 1 Group 2 N Raw Score SD N Raw Score SD Test Form 1 100 Items 100 80 7 Test Form 2 100 Items 100 60 9 Anchor Test 40 Items 38 4 34 6 Scale Score Mean = 500 SD = 100 Mean = 540 SD=65 Mean = 460 SD=88 Why is Equating Necessary? Group 1 Group 2 N Raw Score SD N Raw Score SD Test Form 1 100 Items 100 80 7 Test Form 2 100 Items 100 60 9 Anchor Test 40 Items 25 5 32 6 Scale Score Mean = 500 SD = 100 Mean = 463 SD=73 Mean = 564 SD=91 Why is Equating Necessary? Group 1 Mean Raw Scores Jan 2008 April 2008 July 2008 Oct 2008 Jan 2009 Test Form 1 93 Test Form 2 87 Test Form 3 84 Test Form 4 72 Test Form 5 68 Anchor Test 32 34 35 37 38 Mean Scale Scores 436 476 496 536 556 Overview Equating Requirements Equating Designs Equating Methods Applications to Progress Testing Equating Requirements Alternate forms built to same test specification Test content and conditions of measurement for alternate forms are held constant Random Groups Design for Equating Examinees are randomly assigned to take Form X or Form Y Conditions of measurement for Form X and Form Y are the same Random Subgroup 1 Random Subgroup 2 Form X Form Y Single Group Design with Counterbalancing for Equating Random Random Subgroup 1 Subgroup 2 Form Taken First Form Taken Second Form Y Form X Form Y Form X Single Group Design with Counterbalancing for Equating Counterbalancing used to control for order effects such as fatigue and practice When there are no differential order effects, this design leads to