As the title "Practical Regression" suggests, these notes are a guide to performing regression in practice. This technical note discusses fixed effects models. Though a unified example, the note shows ...

Variance component approaches ... our goal is to estimate fixed effects. Assuming additive effects only, equation (1) can be translated to the following regression framework: Although EMMAX ...

In this paper, we propose a principal component regression model incorporating a multiscale wavelet analysis, a histogram calibration, a principal component analysis, and a multivariate regression to ...

Residual plots can be used to validate assumptions about the regression model. Figure 1 ... evidence that the residuals have an additional component due to lack of fit. One can assess the ...