testing the reliability, difficulty and discrimination of my pilot test.

1. Result
Students 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
1-H 0 1 1 1 0 1 1 0 1 1 0 0 0 1 0 0 0 0 0 1 0 1 1 0 0 0 0 1 1 0
2-P 1 1 0 1 1 1 1 1 1 0 1 0 0 1 0 0 0 0 1 1 0 0 1 0 1 1 0 1 1 1
3-C 1 1 1 1 0 1 1 0 1 1 1 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 1 1 0 1
4-A 1 1 1 1 1 1 1 1 1 1 1 0 0 1 0 1 1 0 1 1 0 0 0 0 0 0 1 1 1 0
5-E 1 1 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 1 1 1 1 1 0 1 1 0 1 1 1
6-O 1 1 1 1 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 1 0
7-L 1 1 0 1 0 1 1 0 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 1 0 1 0 1 0 1
8-T 1 1 1 1 1 1 0 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0
9-V 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 1 1 0 1 1 1 0
10-F 0 1 1 1 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0
Students Total
1-H 13
2-P 18
3-C 17
4-A 19
5-E 19
6-O 16
7-L 15
8-T 14
9-V 15
10-F 9
Total 155

2. Test of Reliability
KR-21
Students 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
1-H 0 1 1 1 0 1 1 0 1 1 0 0 0 1 0 0 0 0 0 1 0 1 1 0 0 0 0 1 1 0
2-P 1 1 0 1 1 1 1 1 1 0 1 0 0 1 0 0 0 0 1 1 0 0 1 0 1 1 0 1 1 1
3-C 1 1 1 1 0 1 1 0 1 1 1 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 1 1 0 1
4-A 1 1 1 1 1 1 1 1 1 1 1 0 0 1 0 1 1 0 1 1 0 0 0 0 0 0 1 1 1 0
5-E 1 1 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 1 1 1 1 1 0 1 1 0 1 1 1
6-O 1 1 1 1 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 1 0
7-L 1 1 0 1 0 1 1 0 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 1 0 1 0 1 0 1
8-T 1 1 1 1 1 1 0 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0
9-V 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 1 1 0 1 1 1 0
10-F 0 1 1 1 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0
Students Total
1-H 13
2-P 18
3-C 17
4-A 19
5-E 19
6-O 16
7-L 15
8-T 14
9-V 15
10-F 9
Total 155
15.5x 
2
9.3888s 
30k 
r 
1
k
k  2
( )
1
x k x
ks
 
 
 
r  30
30 1
15.5(30 15.5)
1
30(9.388)
 
 
 
r 
30
29
 1 .7979
0.21r  Therefore, the test has low
reliability.

3. Difficulty Index
Students 1 2 3 4 5 6 7 8 9 1
0
1
1
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ∑x
4-A 1 1 1 1 1 1 1 1 1 1 1 0 0 1 0 1 1 0 1 1 0 0 0 0 0 0 1 1 1 0 19
5-E 1 1 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 1 1 1 1 1 0 1 1 0 1 1 1 19
2-P 1 1 0 1 1 1 1 1 1 0 1 0 0 1 0 0 0 0 1 1 0 0 1 0 1 1 0 1 1 1 18
3-C 1 1 1 1 0 1 1 0 1 1 1 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 1 1 0 1 17
6-O 1 1 1 1 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 1 0 16
7-L 1 1 0 1 0 1 1 0 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 1 0 1 0 1 0 1 15
9-V 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 1 1 0 1 1 1 0 15
8-T 1 1 1 1 1 1 0 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0 14
1-H 0 1 1 1 0 1 1 0 1 1 0 0 0 1 0 0 0 0 0 1 0 1 1 0 0 0 0 1 1 0 13
10-F 0 1 1 1 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 9
Hc 5 5 3 5 3 5 5 3 5 2 5 0 0 3 0 2 1 0 4 4 3 2 3 1 4 3 2 4 4 3
Lc 3 5 4 5 3 4 4 0 1 2 2 0 0 3 3 1 0 2 0 3 0 3 3 3 2 2 1 3 3 1
p 0.8 1 0.7 1 0.6 0.9 0.9 0.3 0.6 0.4 0.7 0 0 0.6 0.3 0.3 0.1 0.3 0.4 0.7 0.3 0.5 0.6 0.4 0.6 0.5 0.3 0.7 0.7 0.4 0.52
Interp. E Ve E Ve Md Ve Ve D Md D E Vd Vd Md D D Vd D D E D Md Md D Md Md D E E D Md

4. Discrimination Index
Students 1 2 3 4 5 6 7 8 9 1
0
1
1
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ∑x
4-A 1 1 1 1 1 1 1 1 1 1 1 0 0 1 0 1 1 0 1 1 0 0 0 0 0 0 1 1 1 0 19
5-E 1 1 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 1 1 1 1 1 0 1 1 0 1 1 1 19
2-P 1 1 0 1 1 1 1 1 1 0 1 0 0 1 0 0 0 0 1 1 0 0 1 0 1 1 0 1 1 1 18
3-C 1 1 1 1 0 1 1 0 1 1 1 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 1 1 0 1 17
6-O 1 1 1 1 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 1 0 16
7-L 1 1 0 1 0 1 1 0 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 1 0 1 0 1 0 1 15
9-V 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 1 1 0 1 1 1 0 15
8-T 1 1 1 1 1 1 0 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0 14
1-H 0 1 1 1 0 1 1 0 1 1 0 0 0 1 0 0 0 0 0 1 0 1 1 0 0 0 0 1 1 0 13
10-F 0 1 1 1 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 9
Hc 5 5 3 5 3 5 5 3 5 2 5 0 0 3 0 2 1 0 4 4 3 2 3 1 4 3 2 4 4 3
Lc 3 5 4 5 3 4 4 0 1 2 2 0 0 3 3 1 0 2 0 3 0 3 3 3 2 2 1 3 3 1
D 0.4 0 -0.2 0 0 0.2 0.2 0.6 0.8 0 0.6 0 0 0 -0.6 0.2 0.2 -0.4 0.8 0.2 0.6 -0.2 0 -0.4 0.4 0.2 0.2 0.2 0.2 0.4 0.15
Interp. Vg Pi Pi Pi Pi Pi Pi Vg Vg Pi Vg Pi Pi Pi Pi Pi Pi Pi Vg Pi Vg Pi Pi Pi Vg Pi Pi Pi Pi Vg Pi

5. Test Interpretation
Students 1 2 3 4 5 6 7 8 9 1
0
1
1
12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ∑x
4-A 1 1 1 1 1 1 1 1 1 1 1 0 0 1 0 1 1 0 1 1 0 0 0 0 0 0 1 1 1 0 19
5-E 1 1 0 1 1 1 1 1 1 0 1 0 0 0 0 0 0 0 1 1 1 1 1 0 1 1 0 1 1 1 19
2-P 1 1 0 1 1 1 1 1 1 0 1 0 0 1 0 0 0 0 1 1 0 0 1 0 1 1 0 1 1 1 18
3-C 1 1 1 1 0 1 1 0 1 1 1 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 1 1 0 1 17
6-O 1 1 1 1 0 1 1 0 1 0 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 0 0 1 0 16
7-L 1 1 0 1 0 1 1 0 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 1 0 1 0 1 0 1 15
9-V 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 1 0 0 0 1 1 0 1 1 1 0 15
8-T 1 1 1 1 1 1 0 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0 14
1-H 0 1 1 1 0 1 1 0 1 1 0 0 0 1 0 0 0 0 0 1 0 1 1 0 0 0 0 1 1 0 13
10-F 0 1 1 1 1 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 0 9
p 0.8 1 0.7 1 0.6 0.9 0.9 0.3 0.6 0.4 0.7 0 0 0.6 0.3 0.3 0.1 0.3 0.4 0.7 0.3 0.5 0.6 0.4 0.6 0.5 0.3 0.7 0.7 0.4 0.52
Interp. E Ve E Ve Md Ve Ve D Md D E Vd Vd Md D D Vd D D E D Md Md D Md Md D E E D Md
D 0.4 0 -0.2 0 0 0.2 0.2 0.6 0.8 0 0.6 0 0 0 -0.6 0.2 0.2 -0.4 0.8 0.2 0.6 -0.2 0 -0.4 0.4 0.2 0.2 0.2 0.2 0.4 0.15
Interp. Vg Pi Pi Pi Pi Pi Pi Vg Vg Pi Vg Pi Pi Pi Pi Pi Pi Pi Vg Pi Vg Pi Pi Pi Vg Pi Pi Pi Pi Vg Pi
T-Inter. $ & @ & @ & & $ $ @ $ & & @ @ @ & @ $ @ $ @ @ @ $ @ @ @ @ @ @
Legend: @ = Revise
$ = Retain
& = Remove

6. Item5 A B C* D
Hg 0 2 3 0
Lg 0 2 3 0
IE 0 0 0 0
Interp. PI
Item6 A B* C D
Hg 0 5 0 0
Lg 1 4 0 0
IE -0.2 0.2 0 0
Interp. Efd PI
Item7 A* B C D
Hg 5 0 0 0
Lg 4 1 0 0
IE 0.2 -0.2 0 0
Interp. PI MEd
Item8 A B C D*
Hg 1 0 0 4
Lg 2 0 3 0
IE -0.2 0 -0.6 0.8
Interp. MEd VG
Item9 A B C D*
Hg 0 0 0 5
Lg 2 1 1 1
IE -0.4 -0.2 -0.2 0.8
Interp. MEd VG
Item10 A B* C D
Hg 0 2 3 0
Lg 1 2 2 0
IE -0.2 0 0.2 0
Interp. MEd PI
Item11 A* B C D
Hg 5 0 0 0
Lg 2 0 1 2
IE 0.6 0 -0.2 -0.4
Interp. VG MEd
Item12 A B* C D
Hg 2 0 2 1
Lg 4 0 0 1
IE -0.4 0 0.4 0
Interp. MEd PI
Distracter Analysis

7. Item14 A B C* D
Hg 1 0 3 1
Lg 1 1 3 0
IE 0 -0.2 0 0.2
Interp. MEd PI
Item15 A B* C D
Hg 3 0 1 1
Lg 1 3 0 1
IE 0.4 -0.6 0.2 0
Interp. PI
Item16 A B* C D
Hg 0 2 2 1
Lg 1 1 2 1
IE -0.2 0.2 0 0
Interp. MEd PI
Item13 A B C* D
Hg 4 1 0 0
Lg 3 2 0 0
IE 0.2 -0.2 0 0
Interp. MEd PI
Item17 A B C D*
Hg 1 2 1 1
Lg 1 1 3 0
IE 0 0.2 -0.4 0.2
Interp. MEd PI
Item18 A* B C D
Hg 0 0 3 2
Lg 2 0 0 3
IE -0.4 0 0.6 -0.2
Interp. PI MEd
Item19 A B C D*
Hg 1 0 0 4
Lg 1 4 0 0
IE 0 -0.8 0 0.8
Interp. MEd VG
Item20 A B* C D
Hg 0 4 1 0
Lg 1 3 1 0
IE -0.2 0.2 0 0
Interp. ED PI

8. Item21 A* B C D
Hg 3 1 0 1
Lg 1 1 0 3
IE 0.4 0 0 -0.3
Interp. VG MEd
Item22 A* B C D
Hg 2 0 0 3
Lg 3 1 0 1
IE -0.2 -0.2 0 0.4
Interp PI MEd
Item23 A B* C D
Hg 0 3 2 0
Lg 1 3 1 0
IE -0.2 0 0.2 0
Interp. PI MEd
Item24 A B C* D
Hg 1 0 1 3
Lg 2 0 3 0
IE -0.2 0 -0.4 0.6
Interp. MEd PI
Item25 A B C* D
Hg 0 0 4 1
Lg 2 0 2 1
IE -0.4 0 0.4 0
Interp. MEd VG
Item26 A* B C D
Hg 3 1 0 1
Lg 2 2 1 0
IE 0.2 -0.2 -0.2 0.2
Interp. PI MEd
Item27 A B C D*
Hg 1 1 1 2
Lg 1 2 1 1
IE 0 -0.2 0 0.2
Interp. MEd PI
Item28 A B* C D
Hg 0 4 0 1
Lg 2 3 0 0
IE -0.4 0.2 0 0.2
Interp. MEd PI

9. Item29 A B* C D
Hg 0 4 1 0
Lg 1 3 1 0
IE -0.2 0.2 0 0
Interp. MEd PI
Item30 A B C D*
Hg 1 1 0 3
Lg 3 0 1 1
IE -0.4 0.2 -0.2 0.4
Interp. MEd VG