a) Show that the sample covariance sy of a paired sample can be computed by 1...

 

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a) Show that the sample covariance sy of a paired sample can be computed by 1 Sev 2n(n - 1) El jal b) Show for the sample coefficient of correlation ray of a paired sample: • if a, beR, with a >0, and y = ar, +b for i = 1,..,n, then r= 1; • If a, beR, with a < 0, and yi = ar, +b for i = 1,..., n, then r= -1. %3D a) Show that the sample covariance sy of a paired sample can be computed by 1 Sev 2n(n - 1) El jal b) Show for the sample coefficient of correlation ray of a paired sample: • if a, beR, with a >0, and y = ar, +b for i = 1,..,n, then r= 1; • If a, beR, with a < 0, and yi = ar, +b for i = 1,..., n, then r= -1. %3D