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Variance and standard deviation. Calculate the variance and the stan- dard deviation of U.S. Treasury bills, long-term government bonds, and small-company stocks for 1950 to

  1. Variance and standard deviation. Calculate the variance and the stan- dard deviation of U.S. Treasury bills, long-term government bonds, and small-company stocks for 1950 to 1959, 1960 to 1969, 1970 to 1979, and 1980 to 1989 from Table 8.1. Which had the highest variance? Which had the lowest variance? Hint: Use a spreadsheet.

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