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Using R for Rasch Model Analysis by Azman Hasan is a document available to read on EtoBox.
What is Using R for Rasch Model Analysis about?
The document discusses using R to fit Rasch models in item response theory (IRT). It summarizes how the Rasch model separates test taker ability and test quality. It then provides an example data set of student responses to test items and discusses preprocessing the data for IRT analysis in R. This involves removing uninformative items that all or no students answered correctly, as well as students who answered all or none of the remaining items correctly. The data is then reshaped from wide to long format
- Author
- Azman Hasan
- Language
- EN