In econometrics and statistics the<unk><unk>  estimator (also known as the within estimator) is an estimator for the coefficients in panel data analysis. If we assume<unk><unk> , we impose time independent<unk>  for each individual.
Fixed effects estimation
Ancillary statistic
Non-parametric statistics
Bayesian inference
Robust Sandwich Covariate Estimate
Bayesian model comparison
Linear regression
Linear transform model