SE
M - M
√
h. Determining t
with formula:
i. Determining t-table in significance level 5 0,05 with degree of Freedom
df: df = N
+ N – 2
Note: Variable X: Teaching vocabulary by using demonstration technique
Variable Y: Teaching vocabulary without using demonstration technique Criteria :
If means there is significance and Hα is accepted, Hο is rejected.
If t
o
t
table
, means there is no significance and Hα is rejected, Hο is accepted.
F. Statistic Hypothesis
The hypothesis of this study may be: H
o
: µ
1
µ
2
H
a
: µ
1
µ
2
1. Alternative Hypothesis Ha :
“There is a significance difference of students’ vocabulary achievement between students who are taught by demonstration technique and students who are taught
without using demonstration technique .”
2. Null Hypothesis Ho :
“There is no significance difference of students’ vocabulary achievement between students who are taught by demonstration technique and students who
are taught without using demonstration technique .”
29
CHAPTER IV RESEARCH FINDING
A. Description of Data
In this part, the writer displays the description of pre-test and post test data. The data were collected from students pre-test and post-test in both two
classes; experiment and control. It comes which consist of 32 students in each class. It shows in two tables. Tables 4.1 are the data from experiment class and
table 4.2 is data from control class. It also shows the mean of both classes. The data which is obtained is described into tables as follow:
a. Experiment Class VII-F
Table 4.1 The Score of Experiment Class see appendix 9
STUDENTS PRE-TEST
SCORE Y
POST-TEST SCORE
X GAIN
SCORE D
1 70
70 2
80 63.3
-16.7 3
76.7 96.7
20 4
73.3 100
26.7 5
76.7 96.7
20 6
60 86.7
26.7 7
60 80
20 8
46.7 96.7
50 9
60 100
40 10
73.3 96.7
23.4 11
73.3 76.7
3.4 12
56.7 60
3.3 13
50 100
50
14 63.3
73.3 10
15 73.3
100 26.7
16 73.3
93.3 20
17 56.7
96.7 40
18 80
100 20
19 70
66.7 -3.3
20 70
100 30
21 73.3
96.7 23.4
22 76.7
100 23.3
23 53.3
93.3 40
24 73.3
73.3 25
20 83.3
63.3 26
66.7 96.7
30 27
73.3 96.7
23.4 28
53.3 100
46.7 29
46.7 90
43.3 30
56.7 96.7
40 31
53.3 96.7
43.4 32
53.3 100
46.7
∑ 2043.2
2876.9 26.05
Mean 63.85
89.90 833.7
In the table above, it can be shown that in experimental class there are 32 students. The mean of the pre-test in experiment class got 63.85 while in post-test
got 89.90. The lowest score in pre-test is 20 and the highest score in pre-test is 80. While in post-test, the lowest score is 60 and the highest score are 100. Some
students are higher in post-test than pre-test.
b. Control class VII-G
Table 4.2 The Score of Control Class see appendix 10
STUDENTS PRE-TEST
SCORE Y
POST-TEST SCORE
X GAIN
SCORE D
1 73.3
73.3 2
66.7 86.7
20 3
83.3 56.7
-26.6 4
83.3 83.3
5 66.7
80 13.3
6 76.7
86.7 10
7 83.3
86.7 3.4
8 80
66.7 -13.3
9 80
76.7 -3.3
10 70
76.7 6.7
11 60
73.3 13.3
12 66.7
86.7 20
13 70
56.7 -13.3
14 70
66.7 -3.3
15 83.3
66.7 -16.6
16 83.3
76.7 -6.6
17 66.7
90 23.3
18 76.7
86.7 10
19 70
70 20
80 70
-10 21
66.7 73.3
6.6 22
83.3 80
-3.3 23
56.7 76.7
20 24
66.7 80
13.3
