Students’ Number
Controlled Class Gained Score
Pre Test Post Test
29 56
72 16
30 68
76 8
∑ n = 30 ∑ X
=
1776
∑ X
1
=
2124
∑ X
2
=
348 Average
59.2 70.8
11.6 Min
36 56
Max 76
84
Based on the table above, the score of pre-test and post-test of controlled class showed that the highest score on the pre-test was 76 and the lowest score of
pre-test was 36 with the average at 59.20. Then, the average of the post-test was 70.8. The highest score of post-test was 84 while the lowest score was 56. It means
that there was also a significant different between the students’ comprehension of
pre-test and post- test. Although the students’ score of controlled class was also
increased, it was not as significant as the students’ score of experimental class. It can be seen that the controlled class only gained score about 11.60 points.
It can be concluded t hat the students’ score of experimental class was higher
than the students’ score of controlled class which is learning vocabulary with conventional method.
B. Analysis of Data
1. Normality of Data
Before analyzing the hypothesis, the data had to be analyzed by the normality of data. This normality of data used to measure that the data got in research was
normally distributed or not. The writer used SPSS v. 22 for windows with the criteria α 0.05.
a. Normality of Pre-test
1. Normality of Pre-test in Experimental Class
Hypothesis: H0 : Data of X is normally distributed
H1 : Data of X is not normally distributed. The normality test was used by the writer at the 0.05 level of significance.
Tabel 4.3 Normality Pre-test Result of Experimental Class
It can be seen as table 4.3 above, the significace of pre-test score in Experimental Class based on Kolmogorov-Smirnov was 0.200. If the significance
score is higher than α = 0.05, it means that the data was normally distributed. It can be concluded that the significance score of Pre-test in Experiment Class is normally
distributed because 0.200 is higher than 0.05 0.200 0.05. 2.
Normality of Pre-test in Controlled Class
Table 4.4 Normality Pre-test Result of Controlled Class
Tests of Normality
Kolmogorov-Smirnov
a
Shapiro-Wilk Statistic
df Sig.
Statistic df
Sig. Pre_Test_Contr
.113 30
.200 .962
30 .347
. This is a lower bound of the true significance. a. Lilliefors Significance Correction
Tests of Normality
Kolmogorov-Smirnov
a
Shapiro-Wilk Statistic
df Sig.
Statistic df
Sig. Pre_Test
.110 30
.200 .957
30 .260
. This is a lower bound of the true significance. a. Lilliefors Significance Correction
