ΣX = the sum of X scores ΣY = the sum of Y scores
ΣX² = the sum of the squares of X scores ΣY² = the sum of the squares of Y scores
ΣXY = the sum of the products of X and Y scores for each.
To estimate the reliability of the entire test, the formula is:
r
11 = 2r½½_ 1 + r½½
r
11 = the obtained reliability coefficient of the entire test.
r
½½ = the obtained reliability of half the test.
To evaluate the reliability of the entire test, the writer used the criterion proposed by Best and Kahn 1986: 240. The criterion is as follow:
COEFFICIENT r
RELATIONSHIP .00 to .20
Negligible .20 to .40
Low .40 to .60
Moderate .60 to .80
Substantial .80 to 1.00
High to very high From the result of the reliability of the piloted test, it was known that the
reliability of the test is 0.86100174809. It means that the reliability of the test is considered as high to very high see Appendix 7.
2. Questionnaire
The questionnaire was used to know the learning strategies employed by the students to master synonymous words. Using questionnaire can save time
Wallace, 1998: 130. Therefore, the writer chosen questionnaire as one of the research instruments. The questionnaire was close-ended consisting of five items
the questionnaire can be seen on Appendix 3. Close-ended questionnaires are PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI
questionnaires that call for short, check-mark responses Best and Kahn, 1986: 167. In the questionnaire, there were some questions and choices of answer. The
students were required to choose one answer that really represents their attitudes. Before using the questionnaire, the writer did piloting. Questionnaire should
be piloted to see whether it works as planned Wallace, 1998: 132. It was also done because the writer would like to know, how many times they needed to fill
in the questionnaire. Therefore, the writer asked eight students from semester 9 to analyze the questionnaire. It was done after they had done the test. When piloting
the research instruments, the writer asked the students to do the test and fill in the questionnaire. After that, the writer asked them to give their comments. The writer
asked them to give comments based on the questions below: 1.
Is the instruction clear and easy to follow? 2.
Are the questions and all the statements clear? 3.
Do you find any irrelevant question? 4.
Do you find any difficulty in filling the questionnaire?
D. Data Gathering Technique
In the study, the data was gathered through the test and the questionnaire. The test and the questionnaire were distributed to some semester 5 students. The
test and the questionnaire were bounded as one set, but divided into two parts. The students were given 25 minutes to do the test and fill in the questionnaire. The
first 20 minutes were used to do the test and the rest 5 minutes to fill in the questionnaire. In doing the test, the students were required to do the test
individually, to avoid cheating during the test. The results of the test became the PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI
