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Extreme or deviant case sampling: an essential way to learn from both success and failure (09 Jul 12)

Why you can learn a lot from outstanding successes and notable failures

As you know, sampling in qualitative research is very different from quantitative research. Quantitative methods such as large scale surveys depend on big samples selected randomly.

The logic and power of this come from statistical probability theory. Bias is minimised because all members of the survey population have an equal chance of being selected.

In contrast qual…

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