Appendix G: Use of Matrix Notation in Model Representation and Regression Analysis

It may be helpful to summarize representation of models and regression analysis in matrix notation. This does not change anything in the ideas discussed, it is just a concise way of presenting equations. Matrices are indicated in boldface capitals, vectors in boldface lowercase letters. It is supposed that the reader is familiar with matrix operations, if not some references are given at the end. Most software programs, including spreadsheets, can nowadays handle matrix operations.