I assume these come from simple linear regressions, right? What percentage of the variance in salary do the models explain? (or, in other words, what's the R-squared of the models above).
Also, have you considered the possibility that the models are non-linear (that is, salary is calculated by multiplying the variables instead of adding them)? In such case, the right way to do the regression would be to use the natural logarithms of skills, rather than their actual values.
Last edited by GM-kozlodoev at 11/29/2008 11:25:41 AM
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