E. Data Triangulation
In this research, the researcher used more than one data collection. It means triangulation is used. The data were collected through: observation, questionnaire,
and interview. According to Creswell 2015, triangulation is the process of proofing evidence from different individuals e.g., a principal and a student, types of data
e.g., observational field notes and interviews, or methods of data collection e.g., documents and interviews in descriptions and themes in qualitative research.
The triangulation from the instruments and data techniques which are observation, questionnaire and interview would be analyzed to gain the reliability and
validity of the study. Elliot as cited in Anditasari 2012, p. 33 states that data triangulation is a method which brings several evidences to be compared and
contrasted. Moreover, according to Gall, Gall, and Borg 2007, the use of multiple methods to collect data can enhance the validity of findings through a process called
triangulation. Data triangulation is used to make the findings accurate.
F. Data Analysis Technique
In this part, the data techniques were expected to be able to gather the information. The data from the observation checklist, questionnaire, and interview
were analyzed to gather the information on the students‟ perception on the
implementation of scrabble for the 10
th
grade students of SMA N 2 Purworejo. In order to find out the use of scrabble game in improving the 10
th
grade students‟
vocabulary mastery at SMA N Purworejo, the researcher distributed questionnaire to thirty three students and interviewed five students.
The data from the questionnaire and interview were classified into two segments: the
students‟ perception on the implementation of scrabble for the 10
th
grade students of SMA N 2 Purworejo and the use of scrabble game in improving 10
th
g rade students‟ vocabulary mastery. After the questionnaires were distributed, the
final data of the questionnaire were presented in a form of percentage. To get the percentage of each statement, the researcher used the formula as written here:
x = The number of the students based on the degree of agreement n = The number of all participants
Besides the questionnaire, the researcher also needed to analyze the data from the interview. The data were gathered by taking the main idea from each statement
that the participants gave. This was called as a coding system. Coding system is a system used to facilitate the categorizing and counting of specific behaviors as they
occur Ary, Jacobs, Sorensen, 2010. The last analysis is the interview. The goal of this step was to find additional
information to support and strengthen the analysis about the use of scrabble. From the interview, the writer will know the opinions towards the use of scrabble in learning
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