Item performance across native language groups on the Iranian National University Entrance English Exam: a nationwide study

Bormanaki, Hamidreza Babaee; Ajideh, Parviz

doi:10.1186/s40468-022-00185-2

Language Testing in Asia

Table 17 Results of descriptive statistics analysis and Rasch measurement (IUUESEE 2016)

From: Item performance across native language groups on the Iranian National University Entrance English Exam: a nationwide study

Descriptive statistics						Rasch measurement
Item	M	SD	Skewness	Kurtosis	Measure	Infit MNSQ	Outfit MNSQ	PT-Measures	Total scores
1	0.58	0.49	−0.36	−1.87	−0.66	1.03	1.04	0.41	1323
2	0.47	0.49	0.08	−1.99	−0.23	0.92	0.90	0.51	1131
3	0.63	0.48	−0.54	−1.70	−0.86	0.93	0.93	0.48	1200
4	0.43	0.49	0.25	−1.93	0.02	0.84	0.84	0.56	716
5	0.59	0.49	−0.37	−1.86	−0.78	1.09	1.31	0.33	709
6	0.46	0.49	0.15	−1.97	−0.03	0.94	0.91	0.49	879
7	0.66	0.47	−0.71	−1.49	−1.09	0.86	0.78	0.54	1664
8	0.20	0.40	1.47	0.16	1.51	0.98	1.10	0.38	333
9	0.42	0.49	0.30	−1.90	0.33	1.21	1.26	0.25	560
10	0.36	0.48	0.57	−1.67	0.60	0.92	0.92	0.50	524
11	0.54	0.49	−0.16	−1.97	−0.38	0.95	0.99	0.48	710
12	0.25	0.43	1.12	−0.72	1.24	1.05	1.21	0.36	288
13	0.35	0.47	0.61	−1.62	0.50	0.88	0.86	0.53	670
14	0.31	0.46	0.80	−1.35	0.80	0.91	0.94	0.51	379
15	0.43	0.49	0.27	−1.93	0.29	1.24	1.34	0.34	272
16	0.83	0.36	−1.84	1.42	−2.15	1.00	1.08	0.33	1618
17	0.62	0.48	−0.51	−1.74	−0.59	0.97	0.96	0.46	666
18	0.60	0.48	−0.44	−1.80	−0.56	0.99	0.96	0.43	879
19	0.54	0.49	−0.16	−1.97	−0.31	1.05	1.00	0.44	433
20	0.41	0.49	0.36	−1.87	0.43	1.21	1.27	0.32	344
21	0.83	0.37	−1.77	1.13	−2.04	0.91	0.92	0.41	1649
22	0.82	0.37	−1.72	0.96	−1.78	0.78	0.59	0.59	1176
23	0.37	0.48	0.53	−1.71	0.59	1.31	1.57	0.21	298
24	0.28	0.45	0.94	−1.11	0.92	0.87	0.91	0.52	357
25	0.71	0.44	−0.97	−1.05	−1.29	0.89	0.86	0.49	1557
26	0.57	0.49	−0.28	−1.91	−0.47	0.96	0.93	0.46	1105
27	0.31	0.46	0.78	−1.38	0.83	1.34	1.61	0.07	609
28	0.16	0.37	1.78	1.19	2.02	1.32	2.42	0.05	155
29	0.75	0.43	−1.15	−0.66	−1.44	0.86	0.76	0.50	1617
30	0.61	0.48	−0.48	−1.76	−0.43	0.87	0.82	0.54	704
31	0.64	0.47	−0.61	−1.62	−0.73	0.88	0.82	0.51	1079
32	0.54	0.49	−0.18	−1.96	−0.33	0.87	0.85	0.54	888
33	0.43	0.49	0.25	−1.93	0.21	1.01	1.03	0.42	700
34	0.69	0.46	−0.84	−1.28	−1.12	0.99	1.06	0.39	1283
35	0.34	0.47	0.66	−1.56	0.69	1.00	1.05	0.41	523
36	0.73	0.44	−1.07	−0.83	−1.21	0.88	0.80	0.49	1133
37	0.73	0.44	−1.05	−0.88	−1.26	0.93	0.85	0.45	1236
38	0.24	0.43	1.16	−0.63	1.15	1.08	1.23	0.35	329
39	0.49	0.50	0.005	−2.0	−0.06	1.07	1.06	0.35	788
40	0.51	0.50	−0.04	−2.0	−0.10	1.09	1.10	0.36	710
41	0.54	0.49	−0.18	−1.96	−0.39	1.03	1.02	0.39	1131
42	0.61	0.49	−0.48	−1.77	−0.65	1.05	1.04	0.37	1084
43	0.40	0.49	0.38	−1.85	0.44	1.08	1.11	0.34	705
44	0.39	0.48	0.41	−1.85	0.43	1.01	1.04	0.41	610
45	0.55	0.49	−0.22	−1.95	−0.27	1.02	1.10	0.40	676
46	0.60	0.49	0.41	−1.82	−0.48	0.99	0.97	0.41	904
47	0.37	0.48	0.52	−1.72	0.68	1.09	1.15	0.34	461
48	0.65	0.47	−0.63	−1.59	−0.56	0.78	0.72	0.62	472
49	0.61	0.48	0.48	0.48	−0.56	0.94	0.94	0.46	910
50	0.51	0.50	0.06	−2.0	0.10	0.84	0.81	0.59	410
51	0.51	0.50	−0.04	−2.00	0.06	0.94	0.92	0.48	620
52	0.45	0.49	0.18	−1.96	0.29	1.08	1.09	0.34	686
53	0.41	0.49	0.35	−1.87	0.60	1.10	1.16	0.36	399
54	0.49	0.50	0.03	−2.00	0.14	1.10	1.09	0.36	534
55	0.30	0.46	0.83	−1.30	1.05	1.08	1.23	0.35	329
56	0.54	0.49	−0.18	−1.96	−0.24	1.18	1.21	0.29	700
57	0.63	0.48	−0.57	−1.67	−0.51	0.88	0.79	0.54	598
58	0.56	0.49	−0.25	−1.94	−0.09	0.90	0.85	0.58	326
59	0.27	0.44	1.03	−0.93	1.22	0.83	0.82	0.55	340
60	0.53	0.49	−0.15	−1.98	−0.12	1.00	1.05	0.53	253
61	0.32	0.46	0.75	−1.43	0.97	1.48	1.78	0.04	279
62	0.17	0.38	1.70	0.92	1.82	1.17	1.43	0.21	213
63	0.53	0.49	−0.15	−1.9	−0.06	1.05	1.07	0.43	345
64	0.18	0.18	0.18	0.18	1.91	1.08	1.68	0.29	126
65	0.09	0.29	2.76	5.65	2.63	1.37	3.28	−0.05	42
66	0.31	0.46	0.77	−1.39	1.16	1.10	1.42	0.34	214
67	0.75	0.42	0.42	0.42	−1.14	0.81	0.70	0.56	692
68	0.54	0.49	−0.17	−1.97	−0.05	0.87	0.83	0.55	620
69	0.69	0.46	−0.84	−1.28	−0.66	0.91	0.88	0.52	470
70	0.57	0.49	−0.28	−1.92	−0.12	0.90	0.88	0.56	387

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