The sums have been evaluated Solve the simplified system for a and b to find the least squares regression line for the points Use a graphing utility to confirm the result (Note The symbol Icirc pound is used to denote a sum of the terms of a sequence You will learn how to use this notation in Section11 1 ) 1 2 5b 10a 20 2 (10b 30a 50 1 64 (4, 5 8) (3, 5 2) (2, 4 2) 3 (1, 2 9) 2 (0, 2 1) 1 2 3 4 5 1

Question: The sums have been evaluated. Solve the simplified system for a and b to find the least squares regression line for the points. Use a

The sums have been evaluated. Solve the simplified system for a and b to find the least squares regression line for the points. Use a graphing utility to confirm the result. (Note: The symbol Î£ is used to denote a sum of the terms of a sequence. You will learn how to use this notation in Section11.1.)
1.

5b + 10a = 20.2 (10b + 30a = 50.1 64 (4, 5.8). (3, 5.2) (2, 4.2) 3 (1, 2.9) 2. |(0, 2.1) +++ 1 2 3 4 5 -1+

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