Please answer #5 and #6

Use the following common stock price information for Ciena Corporation (Ticker: CIEN) to answer questions 4 - 8 . Assume that Ciena doesn't pay a dividend. The sum of squares equals 0.9843291 . Question 4 3 pts The average return is: $37.14 $33.76 15.31% 16.84% The standard deviation of returns is: 0.109370% 33.07% 31.37% 3.14% Question 6 The variance of returns is: 0.033071 or 330.71 0.022082 or 22.082 0.109370% 0.1093699 or 1093.699