= 25 + 25 – 2
= 48 There is no degree of freedom from 48, so the writer uses the closer df it
is 50. From the result of statistics calculation, it can be seen that the value of t
o
is 3.40 and the degree of freedom df is 50.
According to the table above, df at significant level of 5 is: 5 = t
o
: t
t
= 3.40 2.01 The comparison between t
observation
with t
table
t
o
= 3.40 2.01 It includes
that t
observation
t
o
is higher than t
table
t
t
.
3. The Test of Hypotheses
The writer states the hypothesis as follows: H
a
Experiment Hypothesis = “There is a significant difference of students’
achievement between those who had been taught reading comprehension through small
group discussion compared to those who had been taught reading comprehension without
small group discussion .”
H
o
Null Hypothesis =
“There is no significant difference of students’ achievement between those who
had been taught reading comprehension through small group discussion compared to
those who had been taught
Note :
If t
o
t
t
: There is significant difference and the alternative hypothesis Ha is accepted.
If t
o
t
t
: There is no significant difference and the alternative
hypothesis Ha is rejected, the null hypothesis is accepted.
The hypothesis criterion states that: if t
o
t
t
= H
a
is accepted and H
o
is rejected. And if t
o
t
t
= H
a
is rejected and H
o
is accepted. H
a
is the alternative hypothesis, H
o
is the null hypothesis, t
o
is t observation, and t
t
is t table.
From the result of the statistic calculation which have been done previously, it was obtained the value of t
o
= 3.40. This value is bigger than t
t
at degree of freedom df 5 = 2,01, so the alternative hypothesis H
a
is accepted and the null hypothesis H
o
is rejected.
4. The Data Interpretation
The test of hypothesis shows that the students of experiment class who learnt reading comprehension through small group discussion got higher scores
than students of controlled class who learnt reading comprehension through explanation method.
The findings as described are supported by those enumeration obtained from the observation of writing during experiment. There are some factors it is
causing the improvement of student’s reading comprehension such as
- Students get easy to understand the meaning to each sentences in the text by sharing each other to their friend in a group.
- Students more active during teaching and learning process, by doing some discussion in a class.
- The discussion has been exercised the students to be confident to share what on their mind.
- Students are motivated because the teaching and learning process is enjoyable.
