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was aimed to follow up and verify the statements in the questionnaire in order to gain further information. Not all students as the research participants were
interviewed. There were six students who were interviewed. The interview was conducted on 13
th
and 14
th
February 2008. Besides, the researcher also employed the Vocabulary I students’ final
scores. Those scores were used as a means to answer the second research question where the researcher attempted to find out the correlation between students’
perceptions and their scores. In other words, the researcher endeavored to correlate the data gathered from questionnaire and interview with the scores the
students acquired at the end of semester.
E. Data Analysis Technique
The researcher worked on students’ perceptions and their contributions to their vocabulary mastery in Vocabulary I class. Consequently, he emphasized his
research on two objects, namely the students’ perceptions and the results of their final scores. Firstly, dealing with the students’ perceptions, the researcher counted
the number of circles on each degree of agreement of each item, “strongly agree”, “agree”, “strongly disagree”, and “disagree” by setting them to a table.
Afterwards, the researcher calculated the raw data into percentage and interpreted them by elaborating them with the data acquired from the interview. The next step
was counting the average of each degree of agreement. This calculation pursued one goal that is to inform the researcher about their tendency on each item. The
formula was as follows. PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI
36
100 x
n
where
x
: The number of students based on the degree of agreement
n
: The number of all students
To ascertain the validity of the data acquired from both questionnaire and interview, the researcher conducted data triangulation. According to Patton 2002:
247, data triangulation was “the use of variety of data sources in a study”. He added that data triangulation was intended to produce the consistency of findings.
Denzin 1978 as cited in Moleong 1989: 195 claimed that there were four kinds of triangulation techniques, namely the use of source, method, investigating
officer, and theory. In this research, the data triangulation used source since “the researcher cross-checked the data acquired from the questionnaire with the results
of the interview” Patton, 2002: 195. Basically, the data triangulation was also intended to answer the first research question, which is to explore the students’
perceptions on the implementation of weekly tests. Secondly, dealing with the role of students’ perceptions on their
achievements in weekly tests was discussed separately. The researcher analyzed the data using Pearson Product Moment Coefficient of Correlation r. The
formula is presented as follows: PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI
