How do i calculate variance in this situation? | Mathematics | Page 1

spark hinge Oct 25, 2022, 5:20 PM

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How would I calculate variance in this question considering I dont have a set of data? do i use each shots probability of missing and input it into a set then do it? Thank you!

visual ironBOT Oct 25, 2022, 5:20 PM

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calm pawn Oct 25, 2022, 5:46 PM

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Var(X) = E[(X - E[X])^2]

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or, Var(X) = E[X^2] - (E[X])^2

spark hinge Oct 25, 2022, 5:53 PM

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calm pawn Var(X) = E[(X - E[X])^2]

so what would E and X be in this case?

calm pawn Oct 25, 2022, 5:59 PM

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E means expected value

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X is your random variable, ie the multi of missed shots

pale forge Apr 22, 2024, 6:42 AM

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.close

#How do i calculate variance in this situation?