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Calculate the coefficient of correlation...

Calculate the coefficient of correlation between the two series :

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`gamma=(NSigmaXY-(SigmaX)(SigmaY))/(sqrt(NSigmaX^(2)-(SigmaX)^(2))sqrt(NSigmaY^(2)-(SigmaY)^(2)))`
`=((6xx182)-(21xx42))/(sqrt((6xx91)-(21)^(2))sqrt((6xx364)-(42)^(2)))`
`=(1092-882)/(sqrt(546-441)sqrt(2184-1764))`
`=(210)/(sqrt(105)xxsqrt(420))=(210)/(sqrt(105xx420))=(210)/(sqrt(44100))=(210)/(210)=+1`
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