Lt analysis of item test reliability

1. 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 31 32 33 34 35 36 37 38 39 40
A 1 1 0 1 1 0 1 1 1 0 1 1 1 1 1 1 1 1 1 1 0 0 1 1 0 0 0 1 0 0 0 0 1 0 1 1 0 1 0 1 25 625
B 1 1 0 0 0 1 1 1 0 0 1 1 1 1 1 1 1 0 0 1 0 1 0 1 0 0 0 1 0 1 0 0 1 0 1 1 1 0 1 1 23 529
C 1 1 1 1 0 1 1 1 0 1 0 0 1 1 0 1 1 0 1 1 0 1 1 1 1 0 1 1 1 0 0 1 0 1 1 0 1 1 1 1 28 784
D 0 0 0 1 1 1 1 1 1 0 1 1 1 1 0 1 1 0 1 1 0 1 0 1 0 0 0 0 1 0 0 0 1 1 0 1 1 0 1 0 22 484
E 1 1 0 1 0 0 1 1 1 0 1 1 0 0 0 1 1 1 1 1 1 1 0 1 0 1 1 1 1 0 1 1 1 0 1 1 1 0 1 1 28 784
F 1 1 0 1 0 0 0 1 1 0 1 1 1 1 0 1 1 1 1 1 1 1 0 1 0 1 1 1 1 0 1 1 1 0 1 1 1 0 1 1 29 841
G 1 1 1 1 0 0 1 0 1 1 1 1 1 1 0 0 0 0 1 1 0 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 0 1 1 30 900
H 1 1 0 1 1 0 1 1 1 0 1 1 1 1 1 1 1 0 1 1 0 1 1 1 0 0 0 1 0 0 0 0 1 0 1 1 0 1 0 1 25 625
I 1 1 0 1 1 0 1 1 1 0 1 1 1 1 1 1 1 0 1 1 0 1 1 1 0 0 0 0 0 0 0 0 1 0 1 1 1 1 0 1 25 625
J 1 1 0 1 0 0 1 1 1 0 1 1 1 1 0 1 1 1 1 0 1 1 0 0 0 1 1 1 1 0 0 0 1 0 1 1 1 0 1 1 26 676
correct
answer 9 9 2 9 4 3 9 9 8 2 9 9 9 9 4 9 9 4 9 9 3 9 5 9 2 4 5 8 6 2 3 3 9 3 9 9 8 4 7 9
wrong
answer 1 1 8 1 6 7 1 1 2 8 1 1 1 1 6 1 1 6 1 1 7 1 5 1 8 6 5 2 4 8 7 7 1 7 1 1 2 6 3 1
Mean 1 1 0 1 0 0 1 1 1 0 1 1 1 1 0 1 1 0 1 1 0 1 1 1 0 0 1 1 1 0 0 0 1 0 1 1 1 0 1 1
Standard
Deviation (S)
2,561
2,561
0,569
2,561
1,138
0,854
2,561
2,561
2,277
0,569
2,561
2,561
2,561
2,561
1,138
2,561
2,561
1,138
2,561
2,561
0,854
2,561
1,423
2,561
0,569
1,138
1,423
2,277
1,708
0,569
0,854
0,854
2,561
0,854
2,561
2,561
2,277
1,138
1,992
2,561
S2
6,561
6,561
0,324
6,561
1,296
0,729
6,561
6,561
5,184
0,324
6,561
6,561
6,561
6,561
1,296
6,561
6,561
1,296
6,561
6,561
0,729
6,561
2,025
6,561
0,324
1,296
2,025
5,184
2,916
0,324
0,729
0,729
6,561
0,729
6,561
6,561
5,184
1,296
3,969
6,561
Reliability
0,9
0,9
0,4
0,9
0,7
0,6
0,9
0,9
0,9
0,4
0,9
0,9
0,9
0,9
0,7
0,9
0,9
0,7
0,9
0,9
0,6
0,9
0,8
0,9
0,4
0,7
0,8
0,9
0,8
0,4
0,6
0,6
0,9
0,6
0,9
0,9
0,9
0,7
0,8
0,9
Degree of
Reliability
VERY
-
HI
GH
VERY
-
HI
GH
L
O
W
VERY
-
HI
GH
H
I
G
H
H
I
G
H
VERY
-
HI
GH
VERY
-
HI
GH
VERY
-
HI
GH
L
O
W
VERY
-
HI
GH
VERY
-
HI
GH
VERY
-
HI
GH
VERY
-
HI
GH
H
I
G
H
VERY
-
HI
GH
VERY
-
HI
GH
H
I
G
H
VERY
-
HI
GH
VERY
-
HI
GH
H
I
G
H
VERY
-
HI
GH
H
I
G
H
VERY
-
HI
GH
L
O
W
H
I
G
H
H
I
G
H
VERY
-
HI
GH
VERY
-
HI
GH
L
O
W
H
I
G
H
H
I
G
H
VERY
-
HI
GH
H
I
G
H
VERY
-
HI
GH
VERY
-
HI
GH
VERY
-
HI
GH
H
I
G
H
VERY
-
HI
GH
VERY
-
HI
GH
respondent
ANALYSIS OF RELIABILITY
total
(y) y item number 2