![]() You perform a factor analysis to see if there are really these three factors. ![]() Before using the questionnaire on your sample, you pretest it on a group of people similar to those who will be completing your survey. ![]() You develop a new questionnaire about customer satisfaction with 30 questions: 10 concerning product knowledge, 10 concerning communication skills and 10 concerning people skills. This involves finding a way of condensing the information contained in some of the original variables into a smaller set of implicit variables (called factors) with a minimum loss of information.įor example, suppose you would like to test the observation that customer satisfaction is based on product knowledge, communications skills and people skills. Exploratory factor analysis is a statistical approach that can be used to analyze interrelationships among a large number of variables and to explain these variables in terms of a smaller number of common underlying dimensions.
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