Questions tagged [item-analysis]

Item analysis is the process by which responses to a test are used to assess the overall quality of the test, and the quality of the items comprising the test.

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Is Item Response Theory (IRT) a form of reinforcement learning?

I was doing studies in reinforcement learning and trying to apply it in Computerised Adaptive Testing (CAT). While learning IRT, I felt it is similar to behaviour of RL setting - receiving feedback ...
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35 views

Item sampling techniques to reduce processing time for questionnaire

I have a well-crafted draft of a questionnaire, containing 240 items. The average processing time is 20 secs per item, so the entire questionnaire would take around 1 hour 20 min to complete. I want ...
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What are the most important components of an item analysis of a MCQ exam?

I'm analyzing results of undergraduate exams that range from 60 to 100 multiple choice questions. The number of students doing any given exam ranges from ~70 to ~1000. In all cases students select ...
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Item analysis Skewness and Kurtosis True False Question

I made a test with 15 true/false Questions and about 100 people answered these questions. Now I'm doing the item analysis in R with the package sjPlot and the function sjt.itemanalysis(). Amongst ...
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How can Item Response Theory be used to remove questions asked in a customer satisfaction survey?

I have results from a survey of around 30 Likert-style questions that are asked of customers on their opinion about company X. Each of the 30 questions belongs to a certain category. For example, ...
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1answer
12 views

Accounting for measurement Bias across manufacturers and multiple treatments

I've been trying to figure out the appropriate statistical approach for the following problem from work (simplified here): I've got 5 manufacturers of a drug and each manufacturer makes their own ...
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61 views

Internal consistency

I have to analyse a dataset in which there are drugs and used animals based on article review. The datasets looks like this: ...
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33 views

Handful of IRT scores all exactly the same value

I am using the mirt package in R to model some latent variables. They seem to be working fine, except that a bunch of the scores generated are exactly the same. Most of the scores are within two or ...