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This homework assignment is designed to use a set of data to find the sample variance and sample covariance. The sample variance S2 is defined by S2=n11i=1n(XiX)2, where X=n1i=1nXi. The sample covariance is defined by Sxy=n11i=1n(XiX)(YiY). The sample correlation is defined by R=SxSySxy=i=1n(XiX)2i=1n(YiY)2i=1n(XiX)(YiY). 1. Let Ri(k) and Ri(w) be the ith-month rate of return for sector k and for the SP500 from July 1, 2021 to June 30, 2022. (a) Find the sample variance for Ri(w) ( SP500) and the sample covariance for your section Ri(k) with Ri(w). (use only the set of data from your sector). (b) Find the sample correlation R. Mar 21, 20220.47 Dividend