Question: (a) By hand, draw a scatter diagram treating x as the explanatory variable and y as the response variable. (b) Select two points from the
(a) By hand, draw a scatter diagram treating x as the explanatory variable and y as the response variable.
(b) Select two points from the scatter diagram and ï¬nd the equation of the line containing the points selected.
(c) Graph the line found in part (b) on the scatter diagram.
(d) By hand, determine the least-squares regression line.
(e) Graph the least-squares regression line on the scatter diagram.
(f) Compute the sum of the squared residuals for the line found in part (b).
(g) Compute the sum of the squared residuals for the least-squares regression line found in part (d).
(h) Comment on the ï¬t of the line found in part (b) versus the least-squares regression line found in part (d).
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20 100 30 40 50 60 95 91 83 70
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a b Using the points 30 95 and 60 70 m 70 9560 30 2530 56 y y i m x x i y 95 56 x 30 y 95 56 x 25 y ... View full answer
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