Research Methodology
The data were analyzed by using a quantitative method. The first step of the data analysis is
the descriptive analysis, where we want to see the overall pattern of the data set. Statistical
techniques that involved in the descriptive analysis were basically frequency distribution,
mean, median, variance, standard deviation and coefficient of variation. Frequency
distribution is a multiple-column table containing information on certain parameters;
presented in frequencies and percentages. Mean and median are the measurements of average
values on all data cases. It tells us about the general magnitude of the values or the
observation on a certain variable. Variance, standard deviation and coefficient of variation
are the measurement of variability values of a variable. They have likely known to measures
the reliability of the mean. Most researches used these techniques at the initial stage of data
analysis in order to explore the data and understand their characteristics with their statistical
implications.
There are many literatures on statistical method that were used in conducting a certain
research. For instance, frequency distribution and standard deviation were used to examine
the variability in the perceived service quality attributes of public transport in Kuala Lumpur
[I]. In 1996, standard deviation was used in the study on excessive daytime sleepiness by
interviewing 1,000 young adults in Southeast Michigan, USA [6]. Recently, statistical
method was used to determine the social acceptance levels and problems in the utilisation of
renewable energy sources for different end-uses [12]. This method has continued to be used
by other scientist and researchers [15], [16].