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Old 04-30-2012, 06:17 PM
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yaser yaser is offline
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Location: Pasadena, California, USA
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Default Re: bias and variance - definition of g bar

Originally Posted by shockwavephysics View Post
1. If g has multiple parameters, do you average the curves, or do you average the individual parameters (or does it matter)?
You average the value as a function of x, so 'you average the curves.'

2. When the book says we can think of it this way, does it mean this is not the exact definition?
This would be a finite-sample estimate of \bar g that gets closer and closer to the expected value (which is the formal definition) as you use more and more data sets.
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