the pilot study were asked to fill in the SILL questionnaire. There are thirty learners of English Education Department that chose randomly that participated in
the pilot study. The result measured the reliability through the answers. The participants that took this questionnaire were not the target population which the
writer intended to investigate.
1. Validity
In checking the validity of the questionnaire, the writer used construct validity technique. According to Wahyuni, construct validity technique is validity
that construct validity concerns the degree of truth of an instrument with reference to the theory.
6
Besides, the writer also used content validity technique which has been estimated by measuring the test using rational analysis or professional
judgment of an expert
7
, since lecturer is considered as an expert in this study area, therefore, this instrument was planned and consulted continuously with the
lecturer Mr. Teguh Khaerudin, MAppLing and considered valid. Moreover, this questionnaire is already used by many experts all around the world.
2. Reliability
To measure the reliability of the questionnaire as an instrument of this study, the writer used the Statistical Packages for the Social Science SPSS
version 20. After finding the reliability, the writer used the standard of reliability of
the questionnaire, as stated below:
8
6
Sari Wahyuni, Qualitative Research Method: Theory and Practice, Jakarta: Salemba Empat, 2012, p. 36.
7
Ibid., p. 40.
8
Reliability. Retrieved from http:en.wikipedia.orgwikiCronbach27s_alpha
, accessed at January, 20
th
2015. 10:42 AM.
Table 3.1 Interpretation Table
Points Interpretation
α ≥ 0.9 Excellent
0.7 ≤ α 0.9 Good
0.6 ≤ α 0.7 Acceptable
0.5 ≤ α 0.6 Poor
α 0.5 Unacceptable
Based on the calculation, the result of reliability was 0.93 and showing that the reliability of the instrument was excellent.
F. Data Collection Procedures
In collecting the data needed in this study, the writer required some steps: 1.
Asking permission to conduct the study. 2.
Distributing the questionnaire to 60 students taken in English education department in the 4
th
and 6
th
semester.
G. Data Analysis Procedures
In analyzing the data, the writer did following steps: 1.
Processing the data gained through questionnaires by using Microsoft Excell 2007.
The writer gave score for each answer in the questionnaire. The scores were grade from five to one; Selalu 5, Sering 4, Kadang-kadang 3, Jarang 2,
Tidak Pernah 1. 2.
Calculating the questionnaire through the Statistical Packages for the Social Science SPSS version 20.0.
Descriptive statistic including frequencies, means, standard deviation, and ranking, were implemented in order to investigate the data and the use of
language learning strategies. After that, in order to calculate the most frequent
