[Rasch] Rasch analysis of mixed format data using jMetrik
2596011329 at qq.com
Wed Dec 15 01:52:23 AEDT 2021
Hi, dear Rasch users:
I used jMetrik to analyze the mixed data, a combination of binary items and polytomous item. The polytomous item is scored by human raters, ranging from 4 to 19. I tried to input the practical range (4-19) as well as the theoretical range (0-20). None of the efforts succeeded. Each time, the polytomous item was dropped from the analysis.
Item formats are correct. Between 4 and 19, "5" is missing.
I checked at jMetrik online instruction, but didn't find any solution. Google is not available in China.
Would appreciate if anyone can help.
发件人:"Yingchen "<2596011329 at qq.com>
收件人:"rasch"<rasch at acer.edu.au>;
主题:Questions about partial credit model
Some simple questions.
(1). What is the maximum number of categories that partial credit model can handle? I recall that some professor said 12. Not 100% positive.
(2) What is the maximum number of categories that our current Rasch programs (Winsteps, jMetrik, conquest, etc) can handle?
(3) If my memory is correct (12 as maximum number of categories) and that is the limit of our current programs, are there any ways to bypass this limit? Certainly, the purpose is to run a program on polytomous data with more categories.
Thank you for your help.
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