Regression line: substitute x-bar in and simplify = y bar. See attached file for full problem description.
How would I prove that the regression line will always go through the point of means, e.g., prove that when I substitute in x bar for x in the equation, and simplify, i will get y bar as the answer.© BrainMass Inc. brainmass.com March 4, 2021, 7:46 pm ad1c9bdddf
Please see the attached file.
Proof. Let , i=1,2,..., n be the n points. Assume that is the regression equation. Then the coefficients make the following ...
It proves that the regression line will always go through the point of means.