Q6) A stock had the following annual returns: 5.13% , 12.05% , -10.06% , and 25.02%. Compute the following for the stock:

a) Expected Return : (1.5 points)

b) Variance : (1.5 points)

c) Standard Deviation : (1.5 points)

I understand the expected return, but I'm having issues with the Variance and Standard Deviation.