Please use formulas to showcase answer if applicable

The rates of return on stock A and market portfolio for 15 periods are given below: Period Period Return on stock A (%) Return on Market Portfolio (%) Return on stock A (%) 1 2 3 4 5 6 7 8 10 15 18 14 16 16 18 4 12 14 13 10 9 13 14 7 9 10 11 12 13 14 15 -9 14 15 14 6 7 -8 Return on Market Portfolio (%) 1 12 -11 16 8 7 10 REQUIRED: i. Calculate the beta for stock A? ii. What is the characteristics line for stock A? (25 marks)