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

Quote:
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.'

Quote:
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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