An IERI – International Educational Research Institute Journal
 | Stage | ||||||
---|---|---|---|---|---|---|---|
 | Module | Core | 1 | 2 | |||
Easy | Difficult | Easy | Moderate | Difficult | |||
Difficulty parameter | i1 | 0.318 | 0.533 | 0.533 | 0.260 | 0.260 | 0.260 |
i2 | 0.742 | 0.253 | 0.253 | 0.818 | 0.818 | 0.818 | |
i3 | 0.635 | 0.266 | 0.266 | 0.256 | 0.256 | 0.256 | |
i4 | 0.247 | − 0.052 | 0.977 | − 0.079 | 0.260 | 2.163 | |
i5 | 0.652 | 0.048 | 1.000 | − 0.075 | 0.818 | 1.472 | |
i6 | 0.684 | 0.013 | 0.900 | − 0.259 | 0.256 | 1.517 | |
i7 | 0.505 | 0.112 | 1.037 | − 0.105 | 0.488 | 1.313 | |
i8 | 0.752 | 0.190 | 1.127 | − 0.140 | 0.704 | 1.450 | |
i9 | 0.613 | − 0.030 | 0.887 | − 0.251 | 0.674 | 1.582 | |
i10 | 0.759 | 0.039 | 0.885 | − 0.231 | 0.759 | 1.178 | |
i11 | 0.453 | 0.164 | 1.050 | − 0.174 | 0.646 | 1.397 | |
i12 | 0.646 | 0.154 | 1.105 | − 0.224 | 0.779 | 1.498 | |
Discrimination parameter | i1 | 1.473 | 0.910 | 0.910 | 1.045 | 1.045 | 1.045 |
i2 | 1.976 | 0.683 | 0.683 | 1.030 | 1.030 | 1.030 | |
i3 | 1.316 | 0.705 | 0.705 | 1.143 | 1.143 | 1.143 | |
i4 | 1.126 | 1.459 | 1.754 | 0.692 | 1.045 | 0.580 | |
i5 | 1.344 | 0.659 | 0.874 | 0.915 | 1.030 | 1.890 | |
i6 | 1.152 | 1.098 | 1.553 | 1.226 | 1.143 | 1.148 | |
i7 | 0.855 | 1.333 | 1.530 | 0.681 | 0.765 | 1.313 | |
i8 | 1.545 | 1.248 | 1.326 | 1.306 | 1.599 | 1.237 | |
i9 | 1.204 | 1.352 | 1.650 | 1.186 | 1.764 | 1.398 | |
i10 | 1.399 | 0.513 | 1.388 | 0.821 | 1.399 | 1.058 | |
i11 | 1.158 | 1.376 | 1.147 | 1.136 | 1.676 | 1.577 | |
i12 | 1.676 | 1.389 | 2.166 | 0.912 | 1.136 | 1.706 |