Digital Technology wishes to determine its coefficient of variation as a company over time. The firm projects the following data (in millions of dollars).

a. Compute the coefficient of variation (V) for each time period.
b. Does the risk (V) appear to be increasing over a period of time? If so, why might this be the case?

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Year Profits: Expected value Standard deviation 180 54 104 240 300 166 260 4 400