Question: Try again. Use the formula below to find the standard deviation, where EV is the expected value, x is the value of the random variable,

Try again. Use the formula below to find the standard deviation, where EV is the expected value, x is the value of the random variable, and P(x) is the probability that it occurs. sigmaequalsStartRoot Summation from nothing to nothing left parenthesis x minus EV right parenthesis squared Upper P left parenthesis x right parenthesis EndRoot, where EVequalsSummation from nothing to nothing x times Upper P left parenthesis x right parenthesis

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