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How Many Participants for Quantitative Usability Studies: A Summary of Sample-Size Recommendations

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40 participants is an appropriate number for most quantitative studies, but there are cases where you can recruit fewer users.

9 How Many Participants for Quantitative Usability Studies: A Summary of Sample-Size Recommendations Raluca Budiu, Kate Moran Raluca Budiu and Kate Moran July 25, 2021 2021-07-25 Share Email article Share on LinkedIn Share on Twitter Summary: 40 participants is an appropriate number for most quantitative studies, but there are cases where you can recruit fewer users. In This Article: Introduction The Intuition Behind the 40-Participants Guideline: Why You Need 40 Participants The Assumptions Behind the 40-Participant Guideline When You May Get Away with Fewer Participants What if Your Metric I

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