SAS Output

Item Characteristic Curve and Item Information Function: Item44

Plot of iif * skill_level

Distracter analysis table: Item44

The FREQ Procedure

Frequency Col Pct

Table of A44 by Skill_level
A44(A44)	Skill_level							Total
A44(A44)	-2	-1	0	1	2	3	4	Total
A	1 10.00	24 18.90	119 22.45	347 38.17	493 57.06	358 78.34	215 89.58	1557
B	2 20.00	33 25.98	77 14.53	94 10.34	59 6.83	9 1.97	4 1.67	278
C	1 10.00	36 28.35	148 27.92	205 22.55	153 17.71	37 8.10	6 2.50	586
D	6 60.00	34 26.77	186 35.09	263 28.93	159 18.40	53 11.60	15 6.25	716
Total	10	127	530	909	864	457	240	3137
Frequency Missing = 37

Distractor analysis plot: Item44

Plot of prob * Skill_level = A44

Distractor analysis plot: Item44

KEY44
A