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Oliver Patel——Works at the International Organization for Migration, Lives in Geneva, Switzerland.
Expectation and Variance. The expected value (or mean) of X, where X is a discrete random variable, is a weighted average of the possible values that X can take, each value being weighted according to the probability of that event occurring. The expected value of X is usually written as E(X) or m.read more >>+119962023-06-24 06:39:52
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