Tutorial on It was simple
https://hansjoerg.me/tags/tutorial/
Recent content in Tutorial on It was simpleHugo -- gohugo.ioHansjörg PlieningerMon, 23 Apr 2018 00:00:00 +0000Tutorial: Rasch and 2PL Model in R
https://hansjoerg.me/2018/04/23/rasch-in-r-tutorial/
Mon, 23 Apr 2018 00:00:00 +0000https://hansjoerg.me/2018/04/23/rasch-in-r-tutorial/Setup Data Rasch Model Plots Model Identification Note on Item Parameters in eRm Package MML Estimation 2PL Model Model Fit Relative Fit of Rasch and 2PL Model Absolute Fit of the Rasch Model DIF Person Parameters ML MAP and EAP Item and Test Information References Recently, I wrote a summary of some illustrative IRT analyses for my students. Quickly, I realized that this might be of interest to others as well, and I am posting here a tutorial for the Rasch model and the 2PL model in R.