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from a sample of 10 observations , the following results were obtained: summation Yi =1110, summation...

from a sample of 10 observations , the following results were obtained: summation Yi =1110, summation Xi =1700, summation XiYi =205500 , summation Xi^2 =322000, summation Yi^2 =132100 . with coefficient of correlation r= 0.9758. But on rechecking these calculations ,it was found that two pairs of observations were recorded : Y = 90,140. and X =120, 220. INSTEAD of Y =80, 150. AND X =110, 220. What will be the effect of this error on r? obtain the correct r .

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