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4. [2 points] Suppose that observations on a stock price (in dollars) at the end of each of 6 consecutive months are as noted in the chart below. Estimate the stock price volatility (monthly and annually). Month Price Relative Closing Stock Price =S/S. Monthly Return u=In(S/S) 1 2 $457.61 $476.03 $435.94 $461.90 $423.83 $416.83 4 5 6 4. [2 points] Suppose that observations on a stock price (in dollars) at the end of each of 6 consecutive months are as noted in the chart below. Estimate the stock price volatility (monthly and annually). Month Price Relative Closing Stock Price =S/S. Monthly Return u=In(S/S) 1 2 $457.61 $476.03 $435.94 $461.90 $423.83 $416.83 4 5 6