Least-squares idea The table below gives a small set of data. Which of the following two lines
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Least-squares idea The table below gives a small set of data. Which of the following two lines fits the data better: y^ = 1 − x or y^ = 3 − 2x? Use the leastsquares criterion to justify your answer. (Note: Neither of these two lines is the least-squares regression line for these data.)
x: −1 1 1 3 5 y: 2 0 1 −1 −5
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