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Find the covariance BY HAND x 4 5 7 9 11 y 7 10 15 18 23

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Answer #1

We have to find Var(X) and Var(Y) using their respective formulas. Then we have to find xy for the corresponding x and y values. The formula for covariance is given by

(Summation of xy)/n - (Mean of x)(Mean of y)

Givere valus. y l¥ | 10115|18 | 23 e 4+5+936 16 + 25 +49+81+12 l s 292 2. 53-4-(r). 5 4-51 84 6 56 all the y- vales mulas 210-5118 27 : 49t IDO+225 324 529 1227 5 245.4- 213.1632.24 Now, the tablegíves x. andy ualnes. Ide hain to find Muliplying the | |o l 151 181 23 1y 28 50 105 162 25328 +50 +i05 t 162 +253 598 598 () 7.2) (14 6 5 = 119.6-105-12 14.48 Thus, the nguind envasiante is 1:48

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