The LOG transformation computes the natural log. The PSPLINE expansion expands EqRatio into a linear term, EqRatio, and a squared term, EqRatio2. A linear transformation of CpRatio and a dummy ...

As the title “Practical Regression” suggests, these notes are a guide to performing regression in practice. This note explains how to choose between log and linear specification. The note emphasizes ...

The upward checking, downward averaging algorithm is equivalent to creating a category indicator design matrix, solving for least-squares coefficients with order constraints, then computing the linear ...