Power model (y=x^a) in stata

[Masoumeh Sanagou]

Dear STATALIST,

I need your advice about how to do power modelling (y=x^a) in stata.


Regards,

[Rich Goldstein]

if I understand you correctly, try

help nl

[Masoumeh Sanagou]

Thank you for the reply.
how can I calculate standard errors for predictions after nl?

Regards,

[Rich Goldstein]

I'm not sure exactly what you are asking for, but see

help predictnl