Hi,
for given data points I want to find out a parameter for a function such
that the function fits best to the data points.
The function would be: f(x)=x^alpha.
The data points are:
x_values y_values
-------- --------
0,0000 0
0,0156 0,45
0,0313 0,52
0,0625 4,83
0,0938 11,66
0,1250 12,79
0,1875 21,5
0,2188 25,69
0,2344 27,89
0,2500 29,93
I know how I could do that with the least square method and the Excel
solver.
Which Stata command would deliver the same result? Is _reg3_ the appropriate
command? How would the command line look like?
Furthermore, I want to do the same with 2 unknown parameters, e.g. for the
function f(x)=-k*(-x)^alpha. Which command would be appropriate for 2
unknown parameters (here: k and alpha)?
Any comments would be greatly appreciated.
Cheers,
Tobias Pfaff
University of Muenster
Germany
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