vk = Smallest variant
The hypotheses are: H
o
: the variance of the data is homogenous H
a
: the variance of the data is not homogenous
In this case, the criteria for the criteria for the homogeneity test are: H
o
is accepted if F
observed
≤ F
critical,
it means the variance of the data is homogeneous.
H
a
is rejected if F
observed
F
critical
, it means the variance of the data is heterogeneous.
2. Hypothetical Test
In this research the writer used the quantitative analysis to know whether there is an influence of using
small group discussion towards students’ descriptive text writing ability or not. The data analysis was using T-test in order to know the significance of
the treatment effect. a.
The T-test formula is:
t = −
2 X
+
2 y
+ −2
1
+
1
Notes: Mx
: Mean of control class My
: Mean of Experimental class
x
2
: Average of deviation of control class
y
2
: Average of deviation of experimental class Nx
: Number of the students in control class Ny
: Number of the students in experimental class X
: Deviation each score x2 and x1 Y
: Deviation each score y2 and y1 With d.f : Nx + Ny
– 2.
21
b. The hypotheses are:
H
o
: There is no significant influence of using small group discussion towards students’ descriptive text writing ability.
H
a
: There is a significant influence of using small group discussion towards students’ descriptive text writing ability.
c. The criteria are:
H
a
is accepted if the score of t
observed
is higher than t
critical,
or t
-observed
t
-critical
, with
α = 0.05 H
o
is rejected if the score of t
observed
is lower than t
critical,
or t
-observed
t
-critical
.
21
Suharsimi Arikunto, Op. Cit. p. 269.
CHAPTER IV RESULT AND DISCUSSION
A. General Description of the Research Place
1. Brief Profile of SMA Hidayatul Muslihin Way Kanan
SMA Hidayatul Muslihin is located on Jln. BGD Karta Jaya 34562, Kec. Negarabatin Kab. Way Kanan. It was built on 1976. The activities of teaching learning process are
done in the afternoon. The classes begin at 01.10 P.M. and finish at 05.15 P.M. In this school there are some extracurricular activities, they are basket ball, rohis, and
volleyball. In the academic year of 20162017, SMA Hidayatul Muslihin has 24 teachers. It consists of 9 female and 15 male teachers. Specially, there are 2 English
teachers in SMA Hidayatul Muslihin. The condition of the teacher of SMA Hidayatul Muslihin can be seen in this following table:
Table 6 List of Teachers and Staffs in SMA Hidayatul Muslihin
No Name
Subject Position
1 Suwarso, S.Pd
Indonesian Headmaster
2 Nursidik, S.Pd
English Vice Chairman of
Curriculum 3
Ahmad Kodir Jaelani, S.Pd Sport
Vice Chairman of Studentship
4 Asmaul Khusnah, S.Pd
Civics Teacher
5 Dasar Santoso, S.Pd
Civics Teacher
6 Dewi Asmalaningsih, S.Pd
Geography Teacher
7 Dewi Kartika Sari, S.Si
Science Teacher
8 Dewi Nopitasari, S.Pd
History and Art of Islamic
Teacher
