Research Design Data and Source of Data
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relevant for this study are collected by using technique of sampling. Purposive sampling is used to collect the required data. Bailey 1987:94 also cites:
“In purposive sampling the investigator does not necessarily have a quota to fill from within various strata, as in quota sampling, but neither does ge or she
just pick the nearest warm bodies, as in convenience sampling. Rather, the researcher uses his or her on judgement about which respondents to choose and
picks only those who best meet the purposes of the study.” In addition Arikunto 2006:139 says, “Sampel bertujuan atau purposive
sample dilakukan dengan cara mengambil subjek bukan didasarkan atas strata, random atau daerah tetapi didasarkan atas adanya tujuan tertentu. Teknik ini
biasanya dilakukan karena beberapa pertimbangan, misalnya alasan
keterbatasan waktu, tenaga, dan dana sehingga tidak dapat mengambil sample yang besar dan jauh” purpose of sample or purposive sample is done by taking a
subject not based on strata, random or area, but is based on a certain purpose. This technique is usually done because of some considerations, for example the
limitation of time, energy, and find, so it cannot take a great and far sample.