Does mean centering a variable change the regression coefficient? Mean Centering
ID: 3055652 • Letter: D
Question
Does mean centering a variable change the regression coefficient?
Mean Centering is done by subtracting y-bar from what?
In a simple linear regression, the predicted score for independent variable is_______ when x is at its mean value?
Based on a negative slope in a regression analysis, we expect an increase in predicted y score when x... increases or decreases?
Based on a negative slope in a regression analysis, we expect an increase in predicted?
y hat = .9x + 1 interpret the slope
In a simple linear regression, if the correlation is positive, then the slope of regression line is?
If coefficient of determination is equal to 1, then the correlation coefficient is?
A least squares regression line can only be determined by?
In a simple linear regression analysis with one dependent y and one dependent x variable, if y intercept is positive then?
Explanation / Answer
A predictor that is centered at the meanhas new values–the entire scale has shifted, so that the mean now has a value of 0, but one unit is still one unit. The intercept will change, but the regression coefficient for that variable will not.
Hence it won't change