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An analyst estimates that a stock has the following probabilities of year-end prices: Stock price Probability $80 0.1 $85 0.4 $90 0.3 $95 0.2 Calculate

An analyst estimates that a stock has the following probabilities of year-end prices:

Stock price	Probability
$80	0.1
$85	0.4
$90	0.3
$95	0.2

Calculate the variance and the standard deviation

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