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For each of four consecutive 9 month periods, starting October 1, 2013, derivate the historical annual standard deviation for Chevron stock. (A hint that may
For each of four consecutive 9 month periods, starting October 1, 2013, derivate the historical annual standard deviation for Chevron stock. (A hint that may or may not be useful: treat every day as if it is has the same probability of occurring. Calculate the percentage changes each day. Then apply the formula for standard deviation across the data.)
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