1 2 Variance and standard deviation. Calculate the variance and the standard 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? Click on the Spreadsheet Learning Aid to see Table 8.1-Year-by-Year Returns, 1950-1999 Hint : Make sure to round all intermediate calculations to at least seven (7) decimal places. The input instructions, phrases in parenthesis after each answer box, only apply for the answers you will type. 1990 7.86% 1991 5.65% 3.54% 1993 3.91% 1995 5.58% 5.50% 5.32% 5.11% 4.80% 3 1992 2.97% 4 5 1994 6 7 1996 8 1997 9 1998 10 1999 1 2 Variance and standard deviation. Calculate the variance and the standard 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? Click on the Spreadsheet Learning Aid to see Table 8.1-Year-by-Year Returns, 1950-1999 Hint : Make sure to round all intermediate calculations to at least seven (7) decimal places. The input instructions, phrases in parenthesis after each answer box, only apply for the answers you will type. 1990 7.86% 1991 5.65% 3.54% 1993 3.91% 1995 5.58% 5.50% 5.32% 5.11% 4.80% 3 1992 2.97% 4 5 1994 6 7 1996 8 1997 9 1998 10 1999