Skill: Analysing a Portfolio for Astra Information. Astra is a fund manager, and its research department analyses the performance of two companies, ABC and XYZ. The returns of the two companies, in percent, in the January-March quarter 2016 are shown below. ABC XYZ January 9 1 February 5 6 March 7 2 Jan Feb Mar Requirements. Answer the following questions about the two companies: Q1. What were the means for ABC and XYZ? Q2. What were the variances for ABC and XYZ? Q3. What were the standard deviations for ABC and XYZ? Q4. What was the covariance