Setting Research Instruments METHODOLOGY
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2. Preliminary field testing
In analyzing the data, the writer used Likert scale. In using central tendency as a means of measurement, the writer used five point scales to collect the
respondents’ opinions on the designed materials. They were:
1 = Strongly Disagree with the statement 2 = Disagree with the statement
3 = Neither agree or disagree, or doubt 4 = Agree with the statement
5 = Strongly Agree with the statement The score of the questionnaire was calculated using descriptive statistics to
the source of variance. The source of variance here was number of cases and mean. The central tendency of the respondents’ opinion on the designed set of materials
could be recorded in a table as follow:
Frequency of Points of Agreement Central Tendency
No Respondents’ opinions on
1 2 3 4 5 N Mean
Table 3.2: The Descriptive Statistics of Respondents’ Opinion Blank
Notes: N
= Number of cases the number of respondents Mn
= Mean indicators of central tendency of the set of sources The formula for getting Mean is:
X = Σ X
N PLAGIAT MERUPAKAN TINDAKAN TIDAK TERPUJI
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Notes: X = Mean Indicators of central tendency of the set of sources
X = Raw score Σ = The sum of
N = Number of cases scores The number of respondent In the preliminary field testing, the data showed whether the designed
materials were good and acceptable or not. The assessment of the mean is classified as follows:
0 – 2 : the designed materials were poorly designed 2.1 – 3 : the designed materials were fairly designed
3.1 – 4 : the designed materials were good, but need revisions 4.1
− 5: the designed materials were well designed and acceptable