Rate of return, standard diviation, coefficient of variation
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Mike is searching for a stock to include in his current stock portfolio. He is interested in Apple Inc.; he has been impressed with the company's computer products and believes Apple is an innovative market player. However, Mike realizes that any time you consider a so-called high-tech stock, risk is major concern. The rule he follows is to include only securities with a coefficient of variation of returns below 0.90.
Mike has obtained the following price information for the period 2006 through 2009. Apple stock, being growth-oriented, did not pay any dividends during these 4 years.
Year Beginning End
2006 $ 14.36 $ 21.55
2007 21.55 64.78
2008 64.78 72.38
2009 72.38 91.80
a. Calculate the rate of return for each year, 2006 through 2009, for Apple stock.
b. Assume that each year's return is equally probable and calculate the average return over this time period.
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Rate of return, standard diviation, coefficient of variation
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Year Beginning End Change %change (return
2006 $ 14.36 $ 21.55 ...
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