Ford Motor Company had realized retums of 15%, 25%, 25%, and 15% over four quarters. What is the quarterly standard deviation of returns for Ford calculated from this sample? OA. 52% OB. 606% OC. 577% OD. 462% Prac Click to select your answer build your stud Type here to search + lp 2 # 3 4 % 5 6 & 7 tab 7 W E R . Y caps lock A S D E