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The page below is a sample from the LabCE course Linear Regression Analysis. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Calculate the sum of squares for line B. To do this, you must calculate , the difference y- , and the squared difference (y-)2 for each point, and then sum the squared differences. You may find it useful to make a chart similar to this one. Some of the data has been filled in for you:

The equation for line B is y = x. Use this to calculate the :


What is the sum of squares (the final column)?

Please select the single best answer