2 (50 points). In this task please utilize the Excel spreadsheet called FFportfolios posted in the reading materials for Week 2. Using the software of your choice, for the four Fama-French portfolios (big/value, big/growth, small/value, small/growth) please compute (and provide the relevant spreadsheet or code for the computations):

a. arithmetic average of returns (10 points),

b. their standard deviation (10 points),

c. risk premia (10 points),

d. standard deviations of excess returns (10 points),

e. Sharpe ratios. When looking at Sharpe ratios, please indicate which of the portfolios is the most and which is the least attractive. (10 points)