Question 1 (25 marks) a) Distinguish between the following asset returns: Dollar returns-SmFustfm 1 R 242 marks) i) Simple returmsPe- iii) Log returns iv) Excess returns v Portfolio returns (2 marks) (2 marks) 2 marks) (2 marks) Explain the following concepts: i) A data generating process (d.g.p) -ii) A statistical distribution b) 3 marks) (6 marks) 6 marks) i A statistical model ou estion 2 (25 marks) Consider the population linear regression model State and explain the five properties of u (10 marks) b) Calculate ) The variance Var ) Vor t ii) Covariance of utand x"Yo(%).Var(nt (4 marks) (4 marks) (3 marks) (4 marks)