In some cases, the best-fitting multiple regression equation is of the form Å· = bQ + bQ + b-,x2. The graph of such an equation is a parabola. Using the data set listed in the margin, let xx = x, and, creating an x2 row, let x2 = x2. Find the multiple regression equation for the parabola that best fits the given data. Based on the value of the multiple coefficient of determination, how well does this equation fit the data?

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