Thread: Regression fundamentals (linear, non linear, simple, multiple)
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Old November 7th, 2009, 12:52 AM
ontherocks ontherocks is offline
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Are you sure only B_0 is called the parameter.
I think all the B's are called "parameters" or "regression coefficients".

Now, parameters are just numbers that are obtained when you fit data points to a model. They don't correspond to any real physical entity (unlike variables).
What does the wikipedia statement mean then? How do I know if they are linear or non-linear in B's ?
For example I have a model
y = 3 + 13 x_1 + 7 x_2
How do I know if 3 or 13 or 7 are squares or cubes or fourth power of something.

The other question is, which term in the model
y = B_0 + B_1 x_1 + B_2 x_2 + ... +B_n x_n
gives the information about which variable is dominant and which is not?
Last edited by ontherocks; November 7th, 2009 at 01:14 AM.
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