[Rasch] partial credit model

gao hui huihui4152002 at yahoo.com.cn
Fri Apr 30 19:36:36 EST 2010

The GROUPS for partial credit model  must be =0 ? Or for different types with different values? For instance, one group responses 0,1,2,3 , another group 0,1,2,3,4. how to differentiate these in GROUPS=? I set them with different values for each group. I am not sure about it. Because the final result does not match my prediction. I am looking for any possible causes. thank u.


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