SAS Output

Item Characteristic Curve and Item Information Function: Item46

Plot of iif * skill_level

Distracter analysis table: Item46

The FREQ Procedure

Frequency Col Pct

Table of A46 by Skill_level
A46(A46)	Skill_level							Total
A46(A46)	-2	-1	0	1	2	3	4	Total
A	2 16.67	17 13.08	71 13.32	57 6.27	17 1.97	4 0.88	0 0.00	168
B	2 16.67	43 33.08	221 41.46	608 66.89	740 85.65	440 96.28	239 99.58	2293
C	4 33.33	45 34.62	138 25.89	154 16.94	78 9.03	13 2.84	1 0.42	433
D	4 33.33	25 19.23	103 19.32	90 9.90	29 3.36	0 0.00	0 0.00	251
Total	12	130	533	909	864	457	240	3145
Frequency Missing = 37

Distractor analysis plot: Item46

Plot of prob * Skill_level = A46

Distractor analysis plot: Item46

KEY46
B