Then answer to the asker.
I did. You then showed up to question the answer, so I addressed your retort. That's how public discussion typically operates.
No, that makes it wrong as a formula (look how it looks like).
No, it actually doesn't. It makes the calculated coefficients less precise, but has no bearing on the actual model used.
It is good for estimation and maybe simulates salaries pretty well but it is surely completely different from the real formula which is used.
Maybe it is or maybe it isn't -- we'll never know. But since we're only looking to predict the influence of skills on salary, we're only interested in how the input (skills) influences the output (salary), and not really in what happens in between. It's called the "Black Box" method
(http://en.wikipedia.org/wiki/Black_box_testing).
Last edited by GM-kozlodoev at 4/1/2009 3:56:22 PM
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