Figure 3
A horizontal bar graph compares different research methods and their frequencies. The x-axis represents the frequency, ranging from 0 to 16. The y-axis lists five methods: Gap analysis, modelling and simulation; Mixed method (Questionnaire survey, Interview); Case study; Literature review, systematic literature review; and System development. The bars indicate the following frequencies: Gap analysis, modelling and simulation has a frequency of 2; Mixed method (Questionnaire survey, Interview) has a frequency of 2; Case study has a frequency of 5; Literature review, systematic literature review has a frequency of 9; and System development has a frequency of 15. The bars are colored blue. All values are approximated.Method