[Rasch] Rasch Scoring
talilij at yahoo.com
Tue Sep 20 17:49:29 EST 2011
We are using Rasch model to develop our test questionnaire. The end goal of our tests is to compute scores. Assuming that after Rasch analysis using n=400 students, I arrived a math test questionnaire consisted of 50 items. I will now administer the questionaire to another students (say 200) and then compute the scores for each of the students. Two scenarios:
Scenario 1: Using n=400, I will save the person measures and item measures, then use such values to compute the scores of the 200 students.
Scenario 2: I will not use any values from the previous analysis. Instead, I will just use the data obtained from the 200 students then run directly the winsteps.
Question: Which scenario is the best practice in using Rasch Analysis?
Your comments are very important.
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