Sugiyono further explained five procedures in determing the formula of comparing two groups of sample; one of them is if two groups of sample have
different amount and the varian is homogenous, therefore use the pooled varian where the degrees of freedom is determined by adding both groups of sample and
subtracted by two. With the result of homogeniety varian above, the writer used the following pooled varian formula:
T-test t
o =
√
=
√
=
√
=
√
=
√
=
√
= √
= = 0.69
T-table
The degrees of freedom DF determined the t-table. For DF of this research is N
1
+N
2
-
2= 13 + 14 - 2 = 26. The degree significance of 5 is 2.06, and the degree significance of 1 is 2.78.
C. Test of Hypothesis
To prove the hypothesis, the data obtained from both educational back ground was calculated by using the t-test formula with the assumption as follows:
t
o
t
t
: The alternative hypothesis Ha is accepted and the null hypothesis H
is rejected. It means there is a significance difference between students’ educational background and their achievement.
t
o
t
t
: The alternative hypothesis Ha is rejected and the null hypothesis H
is accepted. It means there is no significance difference between students’ educational background and their achievement.
1
Table 4.8 The Calculation Result of the Hypothesis
Sample Mean
Deviation Standard
DF T-
Test
T
table 1
T
table 5
Conclusion
SMA 13
2.88 0.60
26 0.69
2.78 2.06
Ho is accepted
MA 15
2.69 0.45
Ha is rejected
1
Sugiyono, Metode Penelitian Kuantitatif Kualitatif dan R D, Bandung: Alfabeta, 2009, pp.196-199.
Based on the counting of the formula above, it can be explained that: 1.
The means of English scores from SMA is 2.88, with the highest GPA is 3.6 and the lowest is 1.4. Meanwhile the means of English scores from
MA is 2.69, with the highest GPA is 3.4 and the lowest is 1.8.
2. The deviation standard of SMA S
1
is 0.60, and the deviation standard of MA S
2
is 0.45. 3.
The result of T-test is 0.69. 4.
T-table for the degree of significance 5 is 2.06, and the degree significance of 1 is 2.78.
By comparing the values of t ₀= 0.69 and t
table
2.78 and 2.06, the data calculated with statistical result shows that t
₀ is smaller than t
table
. So, the alternative hypothesis Ha is rejected and the null hypothesis H
₀ is accepted. It means there is no significance difference between Students from SMA and MA in
their achievement in learning English.
D. Interpretation of Data
With the result found above, it can be clarified that there is no significant difference between students from SMA and MA in English achievement. The
result of the t-test was 0.69, and it was smaller than t-table both in the degree significance of 5 and 1 2.06 0.692.78. So the null hypothesis Ho is
accepted and the alternative hypothesis Ha is rejected. It can be interpreted that there is no significance influence between students who have graduated from
SMA and MA in learning English. Even though there was fine superior of SMA than MA, but the result of hypothesis provenance concluded that the students’
educational background did not influence students’ achievement in learning
English. Relating to the result above, the writer sees that MA has showed that this
educational institution is sensible and can compete with other schools. The religious subjects that should be learned in this institution beside general subjects
