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The research analyst for a stock brokerage firm want to compare the dispersion in the price-earnings ratios for a group of common stock with their return on investment. For the price-earnings ratios, the mean is 10.9 and the standard deviation is 1.8. The mean return on investment is 25 percent and the standard deviation 5.2 percent. Compare the relative dispersion for the price-earnings ratios and return on investment.

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