CONCEPT CHECK
Method of Least Squares
In your own words, describe the method of least squares for finding mathematical models.
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EXPLORING CONCEPTS
Find a system of equations whose solution yields the coefficients , , and for the least squares regression quadratic
for the points by minimizing the sum
Finding the Least Squares Regression Line
In Exercises 89 and 90, find the least squares regression line for the points. Use the regression capabilities of a graphing utility to verify your results. Use the graphing utility to plot the points and graph the regression line.