38
Schematically, the following figure reflects the students’ score in present
tense befor
e they taught by dialogue techniques pre
-
test and after the application of dialogue technique in their class post
-test
Based on the figure above, it is clear that the students’ score in present tense has an important. This findings suggest that the teacher of English at MTsN
II Tangerang to use the dialogue techniques as an approach of teaching.
After finding the score of the students, pre
-test and post-
test, the compared
the result of the test by using t-
test formula:
N = Number of cases
X = the score of pre-test
Y
= the score of post-test D
=
Difference
? x = the total score of x
? y = the total of post-test
? D =
the total of difference
G. Analysis of Data
Notes: =
to
M D
SE MD
200 400
600 800
1000 1200
1400 1600
1800 Pre-Test
Post- test
39 ? D
2
=
the total of quadrate difference
Find
out the mean of differences MD between variable X and variable Y, the writer used the formula:
24 326
6 .
13
Based on the data in table 3, writer calculated the result of ? D =
-326 and
? D
2
=7876. Then, the writer tried to find out the standard ion with the
formula:
2
2 2
24 7876
24 326
2
17 .
328 6
. 13
2
96 .
184 17
. 328
143 96
. 11
After finding the result of SD
D
, the writer can seek SE
M D
Standard Error of the Mean of Difference using formula as follow:
1
1 24
96 .
11
MD N
D
D
SD N
D N
D
M D
SE N
SD
D
=
=
=
∑
∑
∑
[ ]
−
−
−
= =
= =
= =
=
=
40 23
96 .
11
79 .
4 96
. 11
49 .
2
The last calculation is determining the result of to t observation of the test with formula:
49 .
2 6
. 13
46 .
5
The last result
-
5
.
46 indicated that there was a difference of degree as much as 5,46. Regardless the minus, it does not indicate negative score.
Then, to complete the result of research, the writer tried to find out the degree of freedom df with formula:
df
= N – 1
= 24
– 1 = 23
df = 23 see table of “t” value at degree of significance of 5 and 1
At the degree of significance of 5 = 2
.
07
At the degree
of significance of 1 = 2
.
81 The result of analyzing the data by using the formula shows that the
coefficient is 5.46 this means that there is increasing score of the simple present tense taught using Dialogue Technique.
= =
=
=
= =
to
M D
SE MD
−
41
Before deciding the result of hypothesis, the writer proposed interpretation toward to t observation with procedure as follows
a If t
o
t
t
: there is a significant difference and the alternative hypothesis Ha is accepted and null hypothesis Ho is rejected.
b If t
o
t
t
: there is no significant difference and the alternative hypothesis Ha is rejected and null hypothesis Ho is accepted.
The result of t
o
t observation found 5.46 and t
t
t table the degree of significance of 5 and 1 are 2.07 and 2.81. Comparing t
o
t observation and t
t
t
ta
ble, the result is 2.075.462.81. It means the t
o
t observation is higher than t
t
t table. According to the data, the score of t
o
is higher than t
t
it means that the alternative hypothesis is accepted and null hypothesis is rejected. There is a
significance effect on the simple present tense taught through dialogue technique. From the result of the test, the writer knows that the students’ post
-
test is higher than pre
-
test which means that the using of dialogue techniques can increase the students’ in understanding the simple present tense.
The test of hypotesis shows that there is a significant difference in students’ score between before and after they are taught by dialog technique. The
difference is students’ score in simple present tense after the aplication of dialogue technique are higher than before they are taught by using dialogue
technique.
The findings as described above are supported by those obtained from the observation of the writer during the experiment. It was found that there are some
factors that cause the improvement of students’ comprehension in simple present
C. Test of H ypothesis:
