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The following results were obtained with respect to two variables and : , , , , and Find the…
The following results were obtained with respect to two variables $x$ and $y$:
$\sum x = 15$, $\sum y = 25$, $\sum xy = 83$, $\sum x^2 = 55$, $\sum y^2 = 135$ and $n = 5$
(i)[2.0]
Find the regression coefficient $b_{xy}$.
(ii)[2.0]
Find the regression equation of $x$ on $y$.
Answer
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From ISC 2019 Mathematics Paper 1, question 20(a).