At the conclusion of research concepts and methods – 2 in the Journal of Sports Therapy (JST) volume 3 (2), I referred to the various categories and families of data variables, and how a basic understanding of their characteristics and behaviour may assist us in the selection and deployment of the most appropriate data samples for quantitative research. You may recall in the same article I also discussed the opportunities and benefits of considering a four-way research matrix, where quantitative and qualitative input variables can be translated into both qualitative and quantitative response variables or outputs, for analytical purposes.

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