Chart 4.3 Student’s Score of Pre-test and Post-test in Experimental and Control Class
B. Data Analysis
Table 4.7 Comparison Score of Pre-test and Post-test in Experimental and Control
Class Students
X Y
x y
x2 y2
1 30
13 3.413
-4.655 11.653
21.670 2
36 13
9.413 -4.655
88.619 21.670
3 27
20 0.413
2.344 0.171
5.498 4
23 13
-3.586 -4.655
12.860 21.670
5 14
10 -12.586
-7.655 158.412
58.601 6
13 7
-13.586 -
10.655 184.585
113.532 7
17 17
-9.586 -0.655
91.895 0.429
8 20
20 -6.586
2.344 43.378
5.498 9
23 20
-3.586 2.344
12.860 5.498
10 23
13 -3.586
-4.655 12.860
21.670
2 4
6 8
10 12
23-32 33-42
43-52 53-62
63-72 73-82
Pre X Post X
Pre Y Post Y
11 23
14 -3.586
-3.655 12.860
13.360 12
20 23
-6.586 5.344
43.378 28.567
13 20
14 -6.586
-3.655 43.378
13.360 14
27 20
0.413 2.344
0.171 5.498
15 33
33 6.413
15.344 41.136
235.463 16
43 26
16.413 8.344
269.412 69.636
17 24
33 -2.586
15.344 6.688
235.463 18
36 16
9.413 -1.655
88.619 2.739
19 30
20 3.413
2.344 11.653
5.498 20
30 16
3.413 -1.655
11.653 2.739
21 20
17 -6.586
-0.655 43.378
0.429 22
23 23
-3.586 5.344
12.860 28.567
23 30
17 3.413
0.655 11.653
0.429 24
27 16
0.413 -1.655
0.171 2.739
25 30
26 3.413
8.344 11.653
69.636 26
39 13
12.413 -4.655
154.102 21.670
27 37
13 10.413
-4.655 108.447
21.670 28
30 13
3.413 -4.655
11.653 21.670
29 23
13 -3.586
-4.655 12.860
21.670
N=29 1513.034 1076.552
Note :
Mx = mean of variable x My = mean of variable y
X = the students gained scores of the experimental class
Y = the students gained scores of the control class
x = X-Mx
y = Y-My
d = student’s gained score
SD = standard of deviation SE
= standard of error N
= student’s number In analyzing the data from the pre-test and post-test result, the writer
used statistic calculation of the t-test formula with the degree of significance 5 and 1. The calculations are as follow:
a. Determining Mean of variable X =
∑
=26.5 b. Determining Mean of variable Y
=
∑
= = 17.6
c. Determining standard of Deviation Score of Variable X =
√
∑
= √
= √
= 7.22 d. Determining Standard of Deviation of Variable Y
= √
∑
= √
= √
= 6.09
e. Determining Standard Error of Mean of Variable X =
√
=
√
=
√
= = 1.36
f. Determining Standard Error of Mean of Variable Y =
√
= =
√
= = 1.15
g. Determining Standard Error of Difference of Mean of Variable X and Mean of Variable Y
= √
= √
= √
= √
= 1.77 h. Determining
= =
= =5.04
i. Determining Degrees of Freedom df =
+ – 2
= 29 + 29 – 2
= 58 – 2
= 56 Because the value of 56 is not mentioned in the table, the writer uses the
closest value to 56 which is 60 as degree of freedom. She gained the t-
table
as follow:
Degree of significant 5 from 60 is 2.00, and degree of significant 1 from 60 is 2.39 see appendices
t
table
at significant 5 is 2.00 t
table
at significant 1 is 2.39 j. The comparison between t
o
and t
table
From the calculation above, the score of experimental class is higher than the control class. The writer also got the result of the comparison between t
o
and t
table
; 2.395.042.00
= t
table
t
o
t
table
C. Test of Hypotheses
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