CHAPTER III METHOD OF THE RESEARCH
3.1 Research Method
In order to carry out this research dealing with the topic, the writer needs to collect both the library and field research. She reads some books related to the topic.
The method of this study used is quantitative method as Arikonto 2006:12 says that quantitative research applies numbers from collecting the data, describing
the data, until the result of the research. In addition, the result of the research will be better if it applies table, graph, draft, picture, etc.
The writer designs a questionnaire for the students who get first until fifth rank. She prepared a set of test consisting of 30 items filling the blanks. The test
consists of five tenses and each tense has 6 questions. The students are asked to answer the questions in 60 minutes.
The research is held in SMK 7 at STM street no 12 E Medan after she gets permission from the headmaster in the school.
3.2 Population and Sample
The population of this research is 35 present from the classes who come when the writer does the test.
The writer takes sample by using purposive sample because there are 19 classes of third year class and each class has more than 35 students. Because it is very
big the writer prefers choosing the students who get first until fifth rank because the writer thinks that those students tend to make fewer errors than others. Arikonto
2006:150 says that purposive sampling is a sampling technical used by a researcher
based on the considerations in collecting the samples. Furthermore, Bailey1987:94 says that in purposive sampling the investigator does not necessary have a quota to fill
from within various strata, as in quota sampling, but neither does he or she just pick the nearest warm bodies, as in convenience sampling. Rather, the research uses his or
her judgment about which respondents to chose and picks only those who best the purposes of study.
3.3 Data and Collecting Method
In order to collect her data, writer gives a test. The writer prefers choosing the students who get first until fifth rank of third year students of SMK 7 Medan. Data is
collected by written method. There are 1050 source data and it is found that there are 568 totals of errors.
3.4 Data Analysis