3.15 Real Estate Prices The data relating the square metres of living space and the selling price of 12 residential properties given in Example 3.5 are reproduced here. First, find the best-fitting line that describes these data, and then plot the line and the data points on the same graph. Comment on the goodness of the fitted line in describing the selling price of a residential property as a linear function of the square metres of living area.

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x(m) y ($ thousands) 126.3 178.5 180.2 275.7 162.6 239.5 144.0 229.8 166.3 195.6 162.6 210.3 207.2 360.5 148.6 205.2 134.7 188.6 173.7 265.7 205.3 325.3 137.5 168.8