/
http://www.student.kuleuven.be/~m0390867/dimitris.htm
- Original Message -
From: SHEN,FENG [EMAIL PROTECTED]
To: r-help@stat.math.ethz.ch
Sent: Friday, January 19, 2007 5:30 AM
Subject: [R] ability estimate with GRM of IRT
Hi my friends,
I have an issue with ability estimates when
Hi my friends,
I have an issue with ability estimates when running GRM of IRT. I
have responses from 242 subjects but got 183 ability estimates.
Below is what I did to get the estimates.
1) I have a csv file P1.csv and I imported it into R and loaded
the ltm package by doing:
