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Results tagged with variance
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user 284580
The expected squared deviation of a random variable from its mean; or, the average squared deviation of data about their mean.
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Stochastic dominance and mean preserving spread
If this is true, the variance of L2 should be bigger then variance of L1 (it is true since Var(L1) = 400 and Var(L2) = 500). … Again we check variance and Var(L3) = 760 < Var(L4) = 1080.
Question 2: Is any of the lotteries a mean preserving spread of another lottery? …
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