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education/statistics/Measurement Error.md
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@ -13,9 +13,10 @@ $$ IndividualMeasurement = ExactValue + ChanceError $$
# Outliers
Histograms of repeated measurements tend to follow the normal curve.
According to the empirical rule, 99.7% of such measurements should be within 3σ of the exact value.
According to the empirical rule, 99.7% of such measurements should be +-3σ of the exact value. Measurements that are not within 3σ are considered *outliers*.
Removing outliers reduces σ.
$$ $
# Terminology
| Term | Definition |
| -- | -- |

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education/statistics/TODO.md Normal file
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(Chapter 7, STAT 1040)