Tagged Questions
2
votes
2answers
161 views
Model selection with nonlinear fitting? Statistical tests seem ambiguous
I'm working on fitting an exponential model
$\mathrm{Flux} = A+Bt+F\left(\exp(t_0-t/T_r) + \exp(t-t_0/T_f)\right)^{-1}+...$
to astronomical data (a light curve).
$A$, $B$, $F$, $t_0$, $T_r$, and ...
6
votes
1answer
144 views
Residual, linear least squares and quality engineering
I wanted to ask this question on stackoverflow but I think it is more suitable here. If I am wrong, please tell me.
My question concerns the use in statistics to analyse physical/engineering data. As ...
1
vote
0answers
297 views
How do I determine which functional form is correct?
I have an assignment that asks me to explore different series of data with respect to the effects that an incinerator built in 1981 in Massachusetts, has on the price of houses in that area.
I have ...
0
votes
3answers
202 views
How to select best model out of linear, quadratic, and a model involving an exponential? Are the models nested?
I'm examining the growth rate of species en function of ion carbonate.
For each specie, I have different measured of ion carbonate, it can be in different temperature or pH.
For each measure, I'm ...
