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Compute the least squares line from summary statistics

Question 1 of 8

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The least squares line predicts the response variable \(y\) from the explanatory variable \(x\)

Summary valueGiven
\(r\)0.4
\(\bar{x}\)14.3
\(s_x\)3.6
\(\bar{y}\)20.5
\(s_y\)6.9
(a)1 mark

Find b for the least squares line, giving 2 decimal places

Format: 2 d.p.
(b)1 mark

Find a to 2 decimal places, using the unrounded slope

Format: 2 d.p.
(c)1 mark

Select the fitted equation with the response variable on the left