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In a Simple Linear Regression Analysis,the Following Sums of Squares

question 59

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In a simple linear regression analysis,the following sums of squares are produced: (YiYˉ) 2=400,(YiY) 2=80,(YˉiYˉ) 2=320\sum \left( Y _ { i } - \bar { Y } \right) ^ { 2 } = 400 , \sum \left( Y _ { i } - Y \right) ^ { 2 } = 80 , \sum \left( \bar { Y } _ { i } - \bar { Y } \right) ^ { 2 } = 320
The proportion of the variation in Y that is explained by the variation in X is:


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