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PART 1 : LINEAR REGRASSION — Statistics STD 12 Commerce — Question

Gujarat BoardEnglish MediumSTD 12 CommerceStatisticsPART 1 : LINEAR REGRASSION3 Marks
Question
The following results are obtained while inquiring the relation between the time of study $($in hours$)$ and the percentage obtained by $8$ students of Standard $12.$ Obtain the regression line of $Y$ on $X$ from it. $\Sigma x=1346, \Sigma y=1338, \Sigma(x-168)=2, \Sigma(y-167)=2, \Sigma(x-168)^2=50$ and $\Sigma(x-168)(y-167)=34$
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Answer

$\hat{y}=52.84+0.68 x$

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