The rates of return on the security of Company X and market portfolio for 10 periods are given below: Period Return of Security X (%) Return on Market Portfolio (%) 1 20 22 2 22 20 3 25 18 4 21 16 5 18 20 6 8 7 17 8 19 5 9 -7 6 10 20 11 0 What is the beta of Security X? (ii) What is the characteristic line for Security X? -5 -6