[BioC] function approximation

[Naomi Altman]

It depends on the number of x-values you have and the approximate 
shape of the trend.  Polynomials are popular.  Sines and cosines are 
popular for periodic functions.

If you have lots of x-values, you could use nonparametric estimators 
such as smoothing splines or loess.

--Naomi Altman



At 03:50 PM 4/6/2009, carol white wrote:
>Hi,
>Having a set of values (non-time series), what are the approximation 
>functions that could determine the trend of the values?
>
>Cheers,
>
>Carol
>
>
>
>
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Naomi S. Altman                                814-865-3791 (voice)
Associate Professor
Dept. of Statistics                              814-863-7114 (fax)
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