Finding and appraising qualitative evidence
A poem about regression to the mean< Back to search results
- Format Videos
- Language/s English
- Target Audience Schools, Further education
- EBM Stage 3 - Appraising evidence
- Duration <5 mins
- Difficulty Intermediate
Key Concepts addressed
This is a funny 1-minute poem about regression to the mean, a common statistical phenomenon which often misleads people (www.inkpotamus.com )
Natural variation in the occurrence of an event can mislead us into thinking that an intervention has been effective when it hasn’t. For example, if a golfer has had a particularly bad round and she changes her grip on the club, she might shoot a better round the next time. But is this down to the changed grip, or is it just the natural variation in her score?
This is called “regression to the mean”.
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