[Rasch] SD or SE and differences in exam attempts
changshuren at huskers.unl.edu
Thu Nov 19 04:20:53 AEDT 2015
Hi, Patrick, You might find the paper useful for the explanations from the link below:
Statistics Corner Questions and answers about language ...
Shiken: JALT Testing & Evaluation SIG Newsletter, 3 (1) April 1999 (p. 20-25) 20 Statistics Corner Questions and answers about language testing statistics:
Shu-Ren Chang, Ph.D.
Psychometrician (Principal Consultant)
Illinois State Board of Education, Springfield, IL
Cell Phone: 217-220-7129
Personal email: changshuren at huskers.unl.edu<mailto:changshuren at huskers.unl.edu>
From: rasch-bounces at acer.edu.au <rasch-bounces at acer.edu.au> on behalf of Patrick Fisher <pfisher at sportsmeasures.com>
Sent: Wednesday, November 18, 2015 9:42 AM
To: rasch at acer.edu.au
Subject: [Rasch] SD or SE and differences in exam attempts
I have a question about a situation I'm examining.
I am looking at some people who have multiple attempts on some high-stakes certification exams and looking at performance improvements over previous attempts. In considering the magnitude of these differences, which is more telling and why: jumps in standard deviation or standard error of measurement?
Thank you very much,
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