A Calculate the arithmetic and geometric means and the variance and standard deviation based on the arithmetic mean for the following data: Growth factor Stock returns 1.000000 2017 12.00% 2018 -8.00% 2019 2020 15.00% 2021 20.00% -2.00% Arithmetic Mean Geometric Mean Variance Standard Deviation Risk-free rate 2.50% Sharpe ratio B Given the following variance and covariance statistics, calculate the portfolio variance, standard deviation and correlation coefficient for a 70%