Concept explainers
Using the same approach as was employed to derive Eqs. (17.15) and (17.16), derive the least-squares fit of the following model:
That is, determine the slope that results in the least-squares fit for a straight line with a zero intercept. Fit the following data with this model and display the result graphically:
x | 2 | 4 | 6 | 7 | 10 | 11 | 14 | 17 | 20 |
y | 1 | 2 | 5 | 2 | 8 | 7 | 6 | 9 | 12 |

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