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EasyEstimation Ver.2.1.9

EasyDIF ( for Differential Item Functionig) Ver.1.1.0

======== Attention ========

All programs are FREE software.
Academic use only ! Don't USE Commercial purpose !
If it cause some trouble by using this software,
I do not assume any responsibility.

======== Instructions ========
How to use "EasyDIF". (PDF file) (revision in 2012.06.28)