Items

Discrimination factor 1

Discrimination factor 2

Discrimination factor 3

Discrimination factor 4

Discrimination factor 5

Difficulty 1

Difficulty 2

Difficulty 3

Difficulty 4

1

0.578

0

0

0

0

3.369

2.066

1.192

−1.03

2

1.248

0

0

0

0

4.891

3.74

1.625

−0.254

3

0.895

0

0

0

0

3.272

2.028

0.542

−0.911

4

1.046

0

0

0

0

3.34

1.9

0.271

−1.425

5

0.745

0

0

0

0

2.767

2.071

0.876

−0.57

6

0.471

0

0

0

0

2.978

2.006

0.727

−0.84

7

0

0.69

0

0

0

3.947

2.65

1.114

−0.764

8

0

1.224

0

0

0

4.785

3.001

1.092

−0.949

9

0

1.796

0

0

0

5.671

4.626

2.239

−0.302

10

0

1.323

0

0

0

4.607

3.567

2.218

0.026

11

0

1.371

0

0

0

5.023

3.794

1.577

−0.606

12

0

0

1.148

0

0

6.687

5.512

2.925

0.841

13

0

0

1.101

0

0

6.67

3.964

2.055

−0.097

14

0

0

1.575

0

0

4.928

4.155

1.873

0.003

15

0

0

0.721

0

0

6.147

4.306

2.132

0.143

16

0

0

0

1.311

0

6.22

4.306

2.662

0.383

17

0

0

0

1.444

0

5.454

4.069

1.705

−0.187

18

0

0

0

1.479

0

4.112

2.994

1.279

−0.7

19

0

0

0

1.458

0

5.432

3.32

1.619

−1.007

20

0

0

0

0.859

0

4.08

3.072

1.811

0.347

21

0

0

0

0

0.978

4.413

2.991

1.834

−0.157

22

0

0

0

0

−0.563

0.955

−0.239

−0.959

−2.071

23

0

0

0

0

0.99

4.057

2.988

1.311

−0.41

24

0

0

0

0

1.672

5.588

4.382

1.835

−0.488

25

0

0

0

0

1.438

5.205

3.89

1.704

−0.598