B. The Description of Data
There are two instruments used to get the data in conducting the research with the two variables the Reading Comprehension test score and IQ test score. it
was mentioned in the previous chapter, that the writer conducted field research and documentation research.
The form of the test were different in the topic. The score of reading comprehension test got from the student reading comprehension test by the
writers, and the score IQ derived from the data of YACOBI Yayasan Consultasi dan Bimbingan each of the criterion has 8 levels Classification and description of
student C.
The Data Analysis
The score of data of this research have been obtained by doing research on the influence of students intelligence on their reading comprehension test scores to
the eight class students at SMPN 2 Pamulang In this chapter the writer gives the report concerning with the data
description, compares the results of those two scores. The data of psychological test result and reading comprehension scores can be seen on the following table in
data analysis To simplify calculation the writer makes an interval ordinal scale of
psychological test result and reading comprehension scores point, as seen on the table.The formula is:
No Nama Siswa
Reading score IQ score
1 Student 1
80 120
2 Student 2
76 123
3 Student 3
80 118
4 Student 4
80 106
5 Student 5
84 32
6 Student 6
84 114
7 Student 7
72 108
8 Student 8
72 114
9 Student 9
70 108
10 Student 10
84 117
11 Student 11
84 124
12 Student 12
84 102
13 Student 13
56 95
14 Student 14
72 112
15 Student 15
68 105
16 Student 16
68 89
17 Student 17
80 123
18 Student 18
76 98
19 Student 19
76 108
20 Student 20
72 108
21 Student 21
68 86
22 Student 22
68 97
23 Student 23
68 91
24 Student 24
80 116
25 Student 25
76 92
26 Student 26
68 87
27 Student 27
72 101
28 Student 28
60 86
29 Student 29
76 107
30 Student 30
80 106
31 Student 31
68 95
32 Student 32
80 134
33 Student 33
84 134
34 Student 34
72 110
35 Student 35
56 85
36 Student 36
72 91
37 Student 37
64 101
38 Student 38
64 98
The score of reading comprehension test
SCORE Higher IQ
level X Lower IQ
level Y
x y
x² y²
80 80
3 9
76 84
-1 4
1 16
80 56
-3 9
84 68
1 1
84 68
1 1
72 76
-2 2
4 4
72 68
-2 4
70 68
-3 9
84 68
1 1
84 76
1 2
1 4
72 68
-2 4
80 72
1 1
76 60
-1 -2
1 4
72 80
-2 3
4 9
80 68
-0 76
56 -1
-3 1
9 80
72 1
1 84
64 1
-1 1
1 72
64 -1
-1 4
1 X= 1478
Y= 1316 x² = 37
y² = 68
Based on the table above, the writer has calculated the result X = 1478 and Y = 1316. Then the writer tried to find out the mean variable with the
formula: 78
. 77
19 1478
= =
= N
X Mx
26 .
69 19
1316 =
= =
N Y
Mg
Based on the data above the writer tried to calculate standard deviation with the formula :
395 .
1 95
. 1
19 37
2
= =
= =
N X
SD
x
892 .
1 58
. 3
19 68
2
= =
= =
N Y
SD
y
Based on the data above the writer tried to calculate the standard error with the formla :
329 .
24 .
4 395
. 1
18 395
. 1
1 19
395 .
1 1
= =
= −
= −
= N
SD SE
x Mx
446 .
24 .
4 892
. 1
18 892
. 1
1 19
892 .
1 1
= =
= −
= −
= N
SD SE
y My
After gaining the result SEMx and SEMy, the writer calculated standard error differences between variable X and Y:
2 2
2 2
2 1
446 .
329 .
+ =
+ =
− M
M My
Mx
SE SE
SE
55 .
307157 .
198916 .
108241 .
= =
+ =
The last procedure of the calculation is determining the result of t
o
t observation of test with the formula :
to = M
x
- M
y
SE
Mx-My
49 .
15 55
. 52
. 8
55 .
26 .
69 78
. 77
2
1
= =
− =
− −
= M
SE M
M t
M y
x
The result 15.49 indicates that there is difference of degree as much as 15.49 between variable X and Y. Then in order to complete the result of this
research, the writer tried to find out the degree of freedom df with the formula : df
= N
1
+N
2
– 2 = 19 + 19 -2
= 36 Based on the table above, df 36 at significant of 5 and 1 are :
t
table
at significant level of 5 = 2.02 t
table
at significant level of 1 = 2.71 So the result is = 2.02 15.49 2.71
If the means that t
o
t observation is higher than t
table
D. The Test of Hypothesis
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