E. The Technique of Data Collecting
The writer uses test technique in collecting data on this research. The test is used in order to know the effectiveness of small group discussion on
students’ speaking skill at eighth grade students of MTs. Darul Ma’arif Jakarta. The test technique is the main technique in collecting the data. The pre-test and
post-test will be given to both experimental class and controlled class to find out their achievement in speaking skill.
1. Pre-test The pre-test is a test that functioned to measure the ability of each class
whether the class is equal or different in abilities.
5
The pre-test is given by the writer in the beginning of attending class VIII.A and VIII.B to know the
student knowledge of the material that will be taught. 2. Post-test
The writer gives the students post-test to know the improvement of students’ ability in speaking skill after the lesson and treatments finished.
F. The Technique of Data Analysis
Test is used by the writer in collecting the data. The data from the test is gained to find out the result of students’ speaking skill by using small group
discussion technique which is applied in the experimental class, the without small group discussion technique in the controlled class. It is obtained from
VIII.A as an experimental class and VIII.B as a controlled class of MTs. Darul Ma’arif. In analyzing data from the pre-test and post-test, the writer uses the
5
Marguerite G. Lodico, Dean T. Spaulding, and Katherine H. Voegle, Methods in Educational Study, From Theory to Practice, San Fransisco: John Wiley and Sons, 2006, p.
185.
statistical calculation of the T-test in which the sample is not related each other. The data is analyzed by using T-test formula for large sample:
6
t
=
Before accounting the data using T-test, the procedures of calculation are follows:
a. Determining Mean of variable X, with formula:
= 1
Mx = the average of gained score mean of variable X
∑ X = sum of gained score variable X
N = number of the students
b. Determining Mean of variable Y, with formula:
= 1
M y = the average of gained score mean of variable Y ∑ Y
= sum of gained score variable Y N
= number of the students c. Determining of standard deviation of variable X, with formula SD:
=
²
SD x = Standard deviation score of Variable X ∑ x
2
= Sun of Squared gained score Variable X N
= Number of the students d. Determining standard deviation score of Variable Y, with formula:
6
Anas Sudijono, Pengantar Statistik Pendidikan, Jakarta: PT. Raja Grafindo Persada, 2008, p. 305-309.
Kategori