Incorrct calculation of sum of squares
Are you sure the sum of squares is 2500 I think it is incorrectly calculated it should be 400 + 400 + 2500 = 3300
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you are correct. Thank you for the feedback. Will try to revise this section
-15^2+2^2+20^2= 172?
Is it -(15^2) or (-15^2)? Because, I thought its the sum of squared errors and the negative gets cancelled as it is squared.
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