There are two categories of research methods: qualitative and quantitative. Quantitative data collection usually involves numbers, graphs and charts, whereas, qualitative data collection methods deals with feelings and other non-quantifiable elements.
The most popular qualitative methods of data collection and analysis in business studies are interviews, focus groups, observation, case studies, games and role playing etc.
Popular quantitative methods of data collection and analysis, on the other hand, include correlation analysis, regression analysis, mean, mode and median and others.
Questionnaires can be used as qualitative, as well as, quantitative method. Specifically, if open-ended questions are used qualitative methods will be used for data analysis. Alternatively, if questionnaire consists of closed-ended questions, then quantitative approach is adopted for data analysis. Differences between Qualitative and Quantitative Methods
The main differences between qualitative and quantitative research methods can be summarised in the following points:
Firstly, the concepts in quantitative research methods are usually expressed in the forms of variables, while the concepts in qualitative research methods are expressed in motives and generalisations.
Secondly, quantitative research methods and measures are usually universal, like formulas for finding mean, median and mode for a set of data, whereas, in qualitative research each research is approached individually and individual measures are developed to interpret the primary data taking into account the unique characteristics of the research.
Thirdly, data in quantitative research appears in the forms of numbers and specific measurements and in qualitative research data can be in forms of words, images, transcripts, etc.
Fourthly, research findings in quantitative research can be illustrated in the forms of tables, graphs and pie-charts, whereas, research findings in qualitative studies is usually
References: Denscombe, M, 2004, The Good Research Guide for small-scale social research, 2nd edition, Open University Press. Monette, DR, Sullivan, TJ, DeJong, CR, 2005, Applied Social Research. A Tool for the Human Services, 6th edition VanderStroep, S.W & Johnson, D.D. (2010) “Research Methods for Everyday Life: Blending Qualitative and Quantitative Approaches” John Wiley & Sons