New Indices for Refining Multiple Choice Questions

Table 4

A sample of the results for different types of items.

Item	Correct response	Distribution of answers						Correct answers	Errors	Correct answers; GF	Correct answers; GD
		A	B	C	D	E	NA
P4	B	2	13	15	1	2	8	13	20	3	4	0.32	26.8	−0.09	2.91
P27	D	1	5	5	7	9	16	7	20	5	0	0.16	6.4	0.45	1.38
P45	D	0	0	1	32	7	3	32	8	11	4	0.74	17	0.64	1.91
P46	A	32	0	1	7	0	3	32	8	11	8	0.74	17	0.27	1.91
P83	D	0	1	3	23	5	14	23	9	11	1	0.5	6.56	0.83	−0.48
P123	E	0	3	3	1	25	18	25	7	8	6	0.5	3.86	0.15	−1.62
P257	B	5	28	2	0	4	11	28	11	11	2	0.56	5.36	0.69	0.56
P259	B	2	30	2	7	0	9	30	11	12	1	0.6	9.73	0.85	0.98
P389	C	33	0	5	0	0	12	5	33	2	0	0.1	99	0.15	3.95
P404	A	9	5	2	5	0	29	9	12	5	1	0.18	6	0.31	−1.91