Exploratory factor analysis (EFA):
Exploratory factor analysis (EFA) is a statistical technique used to reduce data to a smaller set of summary variables and to explore the theoretical structure of the phenomena.
Confirmatory Factor Analysis (CFA):
Using the reslult of EFA with the shortlisted 42 items (Table 4), a questionnaire was prepared and sent to 552 respondents, of which the data of 352 respondents was considered clean and taken for further analysis. Confirmatory Factor Analysis was carried out on this data. The CFA was performed with perceived (experienced) service quality data which were received from 352 wind turbine customers.
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