Question: A scatter diagram includes the four data points (x=2, y=10), (x=3, y=12), (x=4, y=20) and (x=2, y=10).Two regression lines are proposed: = 10 + xand

A scatter diagram includes the four data points (x=2, y=10), (x=3, y=12), (x=4, y=20) and (x=2, y=10).Two regression lines are proposed:

=10 +xand=8 + 2x

Using the least squares criterion, which of these regression lines gives the better fit to thedata and explain why?

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