Discrimination Power Scoring System
increase of students ’ mastery of compound sentences through PPP technique at
the second grade students of SMA Xaverius 1 Belitang. In analyzing the data, the researcher did some steps below:
1. Calculating the score from the pre test and the post test.
2. Tabulating the result of each test and measuring the mean of each test result.
In order to get the mean or the average score of each test, the researcher applied the following formula:
M =
∑ �
Where: M
: Mean Average score ∑x
: Total students’ score
N : Total number of students
The average score of test was the result of total students’ score divided by the
total number of students. Hatch and Farhady, 1982: 55
3. Making a conclusion from the tabulated result of the pre test and the post test
which had been delivered. The researcher analyzed the data had been collected by applying the statistical computerization Repeated Measures t-test of SPSS
15 for Windows i.e. t =
1 − 2
�
to test whether there was a significant difference between pretest and the post test or not, in which the significance
was determined by p 0.05 Hatch and Farhady, 1982:114. Whereas:
�
=
� �
SD =
∑ �
2
− 1 �−∑ �
2
�−1
Where: t
= hypothesis test �
1
= mean score the pre test �
2
= mean score the post test
�
= standard error of differences between two means SD = standard deviation
n = number of students
Hatch and Farhady, 1982:116