Consider the data set given in the accompanying table. Complete parts (a) throug

Question

Consider the data set given in the accompanying table. Complete parts (a) through (c). (a) Determine the least-squares regression line. Choose the correct answer below. A. The least-squares regression line is y = 1.5x + 1.75. B. The least-squares regression line is y = 1.4x + 1.9. C. The least-squares regression line is y = 1.9x + 1.4. D. The least-squares regression line is y = 1.9x + 1.75. (b) Graph the least-squares regression line on the scatter diagram. Choose the correct graph below. (c) Compute the sum of the squared residuals for the least-squares regression line found in part(a). The sum of the squared residuals for the least-squares regression line is. Consider the data set given in the accompanying table. Complete parts (a) through (c). (a) Determine the least-squares regression line. Choose the correct answer below. A. The least-squares regression line is y = 1.5x + 1.75. B. The least-squares regression line is y = 1.4x + 1.9. C. The least-squares regr

Explanation / Answer

A) here b1=Sxy/SSx =1.9

and bo=Ybar-b1*Xbar =1.4

hence regression equation Yhat =1.4+1.9X

option C

b)option A seems to be correct

c)SSE =(Y-Yi')2 =1.1

x y (X-Xbar)^2 (Y-Ybar)^2 (X-Xbar)(Y-Ybar) Yi' (Y-Yi')^2 -2.00 -2.00 4.00 11.56 11.56 -2.4 0.16 -1.00 -1.00 1.00 5.76 5.76 -0.5 0.25 0.00 1.00 0.00 0.16 0.56 1.4 0.16 1.00 4.00 1.00 6.76 -1.04 3.3 0.49 2.00 5.00 4.00 12.96 2.16 5.2 0.04 Total 0.00 7.00 10.00 37.20 19.00 1.1 mean 0.00 1.40 SSx Ssy Sxy

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