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Unformatted text preview: (76) 2 =1 (33) 2 =0 4 8 (86) 2 =4 (43) 2 =1 Total 46= ∑2 ) ( X X i 10= 2 ) ( Y Y iSample standard deviation of X: 39116 . 3 4 46 1 ) ( 1 2 = == ∑ = n X X s n i i X Sample standard deviation of Y: 58114 . 1 4 10 1 ) ( 1 2 = == ∑ = n Y Y s n i i Y Sample covariance between X and Y: 25 . 5 = XY s Correlation coefficient: 979 . ) 58114 . 1 )( 39116 . 3 ( 25 . 5 = = = Y x XY XY s S S r The correlation coefficient is positive indicating a positive relationship. The correlation coefficient is close to +1 indicating a strong positive relationship....
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 Winter '09
 Ogwang
 Econometrics, Standard Deviation, Sample standard deviation, Covariance and correlation, sample covariance, positive relationship, Income Yi Xi

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