B. Analysis of Data
1. Validity Test
The validity of the test is calculated using “ANATEST” software version 4.0.9 By using the software, the writer found 36 of 50 items are
valid and 14 items are not valid. It can be proved by the significance of each item. Besides, the validity or XY correlation of the instrument used
in this study was 0.72. it means the test was valid and categorized into high validity see appendix.
2. Reliabity Test
The writer calculated the reliability of the test using ANATEST. The reability score that the writer got is 0.84. it means the test is reliable.
Besides, the criterion of the test is categorized into high reliability see appendix.
3. Discriminating Power
The writer used ANATEST to analyze the discriminating power of test item used in this study see appendix. The result of the calculation using
ANATEST can be seen as follow:
Table 4.3 The Result of Discriminating Power
A-Multiple-Choice
Number of items DP index
Classification of DP
1. 25.00
Satisfactory 2.
37.50 Satisfactory
3. -25.00
Discarded
4. 0.00
Poor 5.
-12.50 Discarded
6. 62.50
Good 7.
12.50 Poor
8. 12.50
Poor 9.
87.50 Exellent
10. 12.50
Poor 11.
12.50 Poor
12. 12.50
Poor 13.
25.00 Satisfactory
14. 25.00
Satisfactory 15
12.50 Poor
16. 37.50
Satisfactory 17.
12.50 Poor
18. 50.00
Good 19.
50.00 Good
20. 37.50
Satisfactory 21.
62.50 Good
22. 0.00
Poor 23.
62.50 Good
24. 75.00
Exellent 25.
37.50 Satisfactory
26. 50.00
Good 27.
62.50 Good
28. 12.50
Poor 29.
75.00 Exellent
30. 75.00
Exellent 31.
37.50 Satisfactory
32. 12.50
Poor 33.
25.00 Satisfactory
34. 37.50
Satisfactory 35.
50.00 Good
36. 37.50
Satisfactory 37.
12.00 Poor
38. 12.00
Poor 39.
50.00 Good
40. 25.00
Satisfactory 41.
12.50 Poor
42. 25.00
Satisfactory 43.
12.00 Poor
44. 50.00
Good 45.
25.00 Satisfactory
46. 12.50
Poor 47.
50.00 Good
48. 25.00
Satisfactory 49.
0,00 Poor
50. 0.00
Poor
4. Item Difficulty
From the claculation using ANATEST, the writer categorized the items into five classification index. The writer got 18 items are very easy,
10 items are easy, 19 items are moderate, 3 items are difficult and 1 item is very difficult. The categorization of the items is on the table below:
Table 4.4 The Classification of Difficulty Item
Number of Items Classification of Difficulty
Items 4, 5,7, 10, 11, 12, 15, 16,
17, 20, 21, 37, 43, 44, 45, 46, 49, 50
Very Easy 1, 13, 14, 19, 22,
32, 34, 35, 39 Easy
2, 3, 6, 9, 23, 24, 25, 27, 28, 29, 30, 31, 34, 38,
41, 42, 47, 48 Moderate
8, 18, 40 Difficult
4 Very Difficult
5. Normality Test
a. Pre-test of Experimental Class Hypotheses:
H : Data of X normaly distributed
H
1
: Data of Y is not normally distributed
Table 4.5 Normality of Pre-test of Experimental Class
Tests of Normality
Kelas Kolmogorov-Smirnov
a
Shapiro-Wilk Statistic
df Sig.
Statistic Df
Sig. pretest
Experiment ,109
32 ,200
,962 32
,311 . This is a lower bound of the true significance.
a. Lilliefors Significance Correction
Kategori