Least Squares Calculation

Example Regression Line Calculation

The following example will clarify how to use the preceding equations:

    Point x y y2 (x-) (y-) (x-)(y-) (x-)2 (y-)2 xy
    1 6 11 121 -8 -6 48 64 36 66
    2 8 8 64 -6 -9 54 36 81 64
    3 11 14 196 -3 -3 9 9 9 154
    4 13 23 529 -1 6 -6 1 36 299
    5 16 18 324 2 1 2 4 1 288
    6 16 21 441 2 4 8 4 16 336
    7 20 19 361 6 2 12 36 4 380
    8 22 22 484 8 5 40 64 25 484
    Total

    		2520

    		167 218 208 2071

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