b) The following is historical data for Security A and B. i. You are required to calculate the expected return and standard deviation for the securities A and B. Year Return for Sec A Return for Sec B 1 0.25 0.16 2 0.25 0.15 3 0.35 0.20 4 0.15 0.12 5 0.10 0.09 (14 marks) ii. Justify whether security A is the riskier than security B. (4 marks)