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Table 4 The Results of Reliability Calculation

The document reports on the results of a reliability calculation for an instrument. A reliability coefficient of 0.73 was calculated based on students' scores on the instrument. This indicates 73% consistency in scores, which is higher than the desired threshold of 0.70. Therefore, the instrument was determined to be reliable for testing purposes. The document also outlines that percentage analysis and a matched t-test will be used to analyze the data collected from pre-and post-testing with the instrument.

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52 views3 pages

Table 4 The Results of Reliability Calculation

The document reports on the results of a reliability calculation for an instrument. A reliability coefficient of 0.73 was calculated based on students' scores on the instrument. This indicates 73% consistency in scores, which is higher than the desired threshold of 0.70. Therefore, the instrument was determined to be reliable for testing purposes. The document also outlines that percentage analysis and a matched t-test will be used to analyze the data collected from pre-and post-testing with the instrument.

Uploaded by

Anonymous j8BEJkHKJ
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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A reliability of 0.

07 indicates 70% consistency in the scores that are produced by


instrument. The results reliability coefficient were shown as follows:

TABLE 4

THE RESULTS OF RELIABILITY CALCULATION

Students Correct Mean Score (X-X) (X-X)


Number Answer (X)

1. 17 23 -6 36
2. 19 23 -4 16
3. 30 23 7 49
4. 30 23 7 49
5. 27 23 4 16
6. 13 23 10 100
7. 24 23 1 1
8. 26 23 3 9
9. 26 23 3 9
10. 24 23 1 1
11. 19 23 -4 16
12. 18 23 -5 25
13. 23 23 0 0
14. 26 23 3 9
15. 25 23 2 4
16. 33 23 10 100
17. 28 23 5 25
18. 27 23 4 16
19. 22 23 -1 1
20. 23 23 0 0
21. 28 23 5 25
22. 28 23 5 25
23. 29 23 6 36
24. 29 23 6 36
25. 22 23 -1 1
26. 29 23 6 36
27. 22 23 -1 1
28. 23 23 1 1
29. 20 23 -3 9
30. 23 23 0 0
31. 20 23 -3 9
32. 24 23 1 1
33. 21 23 -2 4
34. 18 23 -5 25
35. 16 23 -7 49
36. 19 23 -4 16
37. 10 23 -13 169
38. 36 23 13 169

17
39. 8 23 -15 225
40. 15 23 -8 64
Total X = ( )2
920 = 1382
= 23
40

X 920
M= = = 23
N 40

( )2
SD =

1382
= 40

= 34.55

= 5.87

()
KR21 = [ [1 ]
1 ()2

40 23 (4023)
=401 [1 ]
40 (5.87)2

40 23 (17)
= 39 [1 40 (34.5) ]

391
= 1.02 [1 1380 ]

= 1.02 [1 0.28 ]

= 1.02 [0.72 ]

= 0.73

27
Based on the analysis above, it was proved that the result of reliability coefficient was
0.73. it was higher than 0.70. The reliability should be at least 0.70 and preferably higher. It
showed that the instrument was reliable and ready for test.

6.3 Technique for Analyzing the Data

The technique for analyzing the data consist of the percentage analysis and matched t-

test.

6.3.1 Percentage Analysis

Percentage analysis is applied to know the result of individual students, both in pre-

test and post test. The formula is as follows:



S = 100%

In which :

S : Student Score

R : Number of Correct Answers

N : Number of Items

37

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