Class 19: Qualitative sampling, analysis and rigour

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Last updated 10:19 PM on 4/11/26
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6 Terms

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Qualitative sample size

No strict sample size rules; depends on purpose, method, and data saturation.

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Fittingness > representativeness:

focus on rich, meaningful data rather than statistical generalizability.

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  • Phenomenology:

  • ~5–25 participants (even 1 case may suffice)

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  • Ethnography & Grounded Theory:

  • ~20–50 participants

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Common qualitative Sampling Strategies

  1. Purposive: select participants who provide rich, relevant info (most common).

  2. Convenience: select easily accessible participants (least rigorous).

  3. Snowball/Chain: participants refer others; useful for hidden or sensitive populations.

  4. Theoretical: mainly in grounded theory; sample evolves as categories emerge.

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Key Goals ofQualitative Rigour

  1. Accountability: process clear & reproducible.

  2. Credible explanation: convincing interpretation of phenomenon.

  3. Credibility: confidence in truth of findings.

  4. Auditability: traceable decisions & processes.

  5. Fittingness: relevance/applicability to other contexts.

  6. Authenticity: faithful representation of participants’ voices.