Research Subjects RESEARCH METHODS

3. Questionnaires There were two kinds of questionnaire used in this research which were questionnaire for needs analysis and questionnaire for expert judgment. The questionnaire for needs analysis was used to obtain information about the target needs and the learning needs of the third year students of Physics Education Department Yogyakarta State University. Questionnaire for expert judgment was used to get comments and suggestions from the materials and multimedia expert. The feedbacks from the expert judgment were used to revise the materials.

G. Data Analysis Techniques

There were two types of data used in this research which were qualitative and quantitative data. The qualitative data were obtained from interview and observation in the form of observation field notes and interview transcripts. The quantitative data were collected from questionnaires. The data of needs analysis questionnaire were analysed using frequency percentages while the expert judgement questionnaire used were analysed using descriptive statistics. To measure the experts’ opinion about the media the researcher used a Likert Scale. The scoring point is presented in the table below. Table 3.1. The Scoring Point of Likert Scale Scales Categories 5 Strongly agree 4 Agree 3 Neither agree or disagree 2 Disagree 1 Strongly disagree The data were then analyzed descriptively using quantitative data conversion proposed by Sudjono 2003: 335. The result of the conversion determined whether the product was already appropriate or not. The table below shows the quantitative data conversion. Table 3.2. Quantitative Data Conversion Sudjono, 2003: 335 No. Interval of Mean Value Categories Formula Score Range 1 � � Mi + 1.8 SDi � � 4.2 Very Good 2 Mi + 0.6 SDi � � ≤ Mi + 1.8 SDi 3.4 � � ≤ 4.2 Good 3 Mi – 0.6 SDi � � ≤ Mi + 0.6 SDi 2.6 � � ≤ 3.4 Fair 4 Mi – 1.8 SDi � � ≤ Mi – 0.6 SDi 1.8 � � ≤ 2.6 Poor 5 � � ≤ Mi – 1.8 SDi � � ≤ 1.8 Very Poor Where: � � = mean value Mi = the ideal mean = 1 2 � maximal score + minimal score = 1 2 � 5+1 = 3 SDi = the ideal standard deviation = 1 6 � maximal score – minimal score = 1 6 � 5-1 = 2 3 �