The data set which I am trying to analyse is Student Test Data.
I have a data of responses (either 1/correct response or 0/incorrect response) on some questions of a set of students. I have fitted a "3 parameter logistic model" for each question and then calculated the goodness of fit estimate and hence the respective p-values.
Now my problem is I don't know how to aggregate these individual goodness of fit estimates to get a total goodness of fit for the whole model, Is there any measure (preferably in the programming language R) which can suggest about the whole model depending on the p-values of multiple tests. The package which I used is ltm inside R.