When you sample, what bias are you inflicting?

When you sample, what bias are you inflicting?



Selection bias:
- An online survey about computer use is likely to attract people more interested in technology than in typical

Under coverage bias:
- Sample too few observations from a segment of population

Survivorship bias:
- Observations at the end of the study are a non-random set of those present at the beginning of the investigation
- In finance and economics: the tendency for failed companies to be excluded from performance studies because they no longer exist

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