W.1 - Unit 1, Part 2: (4) Robust Statistics.
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Robust Statistics are most useful for...
-- Describing *skewed* distributions, or those with extreme observations.
Non-robust statistics are most useful for...
-- Describing *symmetric* distributions.
What is Robust Statistics ?
-- Measures on which extreme observations have *little effect.*
Give examples of Robust Statistics
-- The median. It only depends on the *midpoint* of the distribution, and the values of the endpoints are irrelevant to its calculation. -- IQR. It is based on the median.
