Mathematics, 10.03.2020 09:07 simbupls
The variance of a discrete random variable X with pmf functionf(x) is definedas∑x((x−μX)2f(x)), which is the expected value of the squared distancefrom the mean ,μX. Show that this sum is equal to∑x(x2f(x))−μ2X.
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The variance of a discrete random variable X with pmf functionf(x) is definedas∑x((x−μX)2f(x)), whic...
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