(a) On graph paper, plot the following points: (1, 2), (3,

Chapter 4, Problem 28

(choose chapter or problem)

(a) On graph paper, plot the following points: (1, 2), (3, 2), (5, 4), (8, 5), (9, 6). (b) In your scatter diagram from part (a), sketch a line that best seems to fit the data. (c) Using your sketch from part (b), estimate the y-intercept and the slope of the regression line. (d) The actual regression line is y 0.518x 1.107. Check to see whether your estimates in part (c) are consistent with the actual y-intercept and slope. Graph this line along with the points given in part (a). (In sketching the line, use the approximation y 0.5x 1.1.)

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