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LINEAR REGRASSION — Statistics STD 12 Commerce — Question

Gujarat BoardEnglish MediumSTD 12 CommerceStatisticsLINEAR REGRASSION3 Marks
Question
Following data is collected on two mutually dependent variables $X$ and $Y$ : $n=25, \Sigma x=125, \Sigma y=100, \Sigma x y=508, \Sigma x^{2}=650, \Sigma y^{2}=440$ obtain the regression line of $Y$ on $X$. Estimate $Y$ for $X=15$.
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Answer

$\hat{y}=2.4+0.32 x ; \hat{y}=7.2$

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