standard deviation A company had realized returns of 20% 30% 30% and 20% over 4 quarters. What is the quarterly standard deviation of returns for the company? 24.62% b) 5.20% 85.77% d) 8.35% e) 6.06% A portfolio has 30% of its value in company A, and the rest in company B- The lolatility of compt, and compo are 55% and 30% respectively, and the correlation between them is 05. What is the standard deviation of the portfolio