3. A stock has returns of -9%, 17%, 9%, 14%, -4%. What are the arithmetic and geometric retums? (6 marks) 4. Using the following data, calculate the Variance and Standard deviation: (10 marks) Retums: Year 1 = 17%, Year 2 = 11%, Year 3 = -2%, Year 4 = 3%, Year 5 = 14%