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Statistically your confidence interval can go negative but practically a negative concentration doesn't exist.
by zitterbewegung 14y ago
Statistically your confidence interval can go negative but practically a negative concentration doesn't exist.
- cperciva 14y agoStatistically your confidence interval can go negative No, it really can't. If it looks like it is, you're using a symmetric distribution function (probably a normal distribution) in a context where its assumptions do not hold.
- zerostar07 14y agoI think they said variation, not confidence interval