Question: Portfolio risk ( S 7 . 4 ) Suppose in a 5 k - stock portfolio, all stocks have a standard deviation of 3 0

Portfolio risk (S7.4) Suppose in a 5k-stock portfolio, all stocks have a standard deviation of 30% but the correlation between each pair of stocks is zero. What is the variance of the returns on a portfolio that has equal holdingsin50stocks?
What is the standard deviation?

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