|
Five-facet rating scale with bias analysis: Essays+Days |
Top Up Down
A A |
Using the Essays dataset, judge-day interactions are now to be examined. Since the day number is already coded in Facet 4, this can be implemented with Dvalues= without reformatting the data.
Facets specifications and data (in file Essayday.txt):
; this is file essayday.txt title = AP English Essays (College Board/ETS) facets = 5 ; there are 5 facets in this analysis Model= ?,?B,?,?,?B, R9 ; look for interaction/bias between reader and day * Dvalues= 5, 4, 5, 1 ; day number: facet 5 of each observation from label for element in facet 4 ; starting in column 5 of the label with a length of one. * noncenter = 1 ; examinee facet floats positive = 1 ; for examinees, greater score = greater measure inter-rater = 3 ; facet 3 is the rater facet usort = 2,3,1 ; sort residuals by 2=Essay, 3=Reader, 1=Examinee convergence = 0.1 ; size of largest remaining marginal score residual at convergence unexpected = 3.0 ; size of smallest standardized residual to report arrange = M ; arrange output tables in Measure ascending order
Labels= 1,examinee 1-32 ; 32 otherwise anonymous examinees * 2,Essay 1,A ; 3 essays 2,B 3,C * 3,Reader 1-12 ; 12 otherwise anonymous readers * 4,Session,A ; this is a dummy facet 11,day 1 time 1 ,0 ; 8 sessions - all anchored at 0 12,day 1 time 2 ,0 21,day 2 time 1 ,0 22,day 2 time 2 ,0 31,day 3 time 1 ,0 32,day 3 time 2 ,0 41,day 4 time 1 ,0 42,day 4 time 2 ,0 * 5, Day, A ; this is a dummy facet, used only for investigating interactions 1, Day one, 0 ; Dvalues= obtains these from Facet 4. 2, Day two, 0 3, Day three, 0 4, Day four, 0 *
data = 05,1,1,11,4 ; first rating: examinee 5, essay 1, reader 1, session 11, rating of 4 | ; more data 09,1,1,11,3 ; last rating |
Help for Facets Rasch Measurement Software: www.winsteps.com.