B C Year Return (%) 1876 -1 WO N 1877 1878 19 1879 2 1880 1881 36 1882 21 1883 16 10 1884 -5 1885 43 12 1886 A4 13 1887 4S 14 1888 7 15 1889 11 16 1890 23 17 1891 20 18 1892 -11 19 1893 42 20 1894 51 21 1895 -39 22 1896 42 23 1897 12 24 1898 26 25 1899 26 1900 -6 27 1901 23 28 1902 31 29 1903 30 30Use Excel to analyze the following two datasets Frisco Railroad 9. The St. Louis-San Francisco Railway (the "Frisco") was headquartered at its junction in Springfield, Missouri. You have data from 28 years of returns for investors in the rail line. (2 decimals) The average return is 17.4286%. What is the geometric mean of the returns