Least Squares Regression Analysis In Exercises 27-30, (a) sketch the line that appears to be the best fit for the given points, (b) find the least squares regression line, and (c) calculate the sum of...

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Extracted text: Least Squares Regression Analysis In Exercises 27-30, (a) sketch the line that appears to be the best fit for the given points, (b) find the least squares regression line, and (c) calculate the sum of squared error. 27. 28. 4- (2, 3). 3+ (3, 2) 2+ (-1, 1) 2+ • (1, 1) ++++ + 2 3 14 (-2,0) (0, 1) (-3, 0)-1 29. 30. to, 4) (5, 2) (4, 2) (6, 2) E (3, 1) (1, 0) 3+ 3+ 1.3) 2- -4, 1) (1, 1) (2, 0) (2, 0) (3, 0) 3 4. 77