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Standardized Partial Slope Coefficients (beta weights)

 

Partial slope coefficients are not directly comparable to one another.  This is because each variable is often based on a different metric.  Beta weights (standardized slope coefficients) are used to compare the relative importance of regression coefficients in a model. They are not useful for comparisons among models from other samples.

 

Formula:            or  partial slope * std dev. of Xi/std dev. of Y

 

Example:

 

Education partial slope coefficient = 1878.2

Education standard deviation = 2.88

Begin salary standard deviation = 7870.64

 

      

 

This is interpreted as the average standard deviation change in Y (salary) associated with one standard deviation change in X (education), when all other independent variables are held constant.  Or a one standard deviation change in education results in an average change of .687 standard deviations in income.

 


 

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