Generalized Inverse Matrices. Distributions and Quadratic Forms. Regression, or the Full Rank Model. Introducing Linear Models: Regression on Dummy Variables. Models Not of Full Rank. Two Elementary Models. The 2-Way Crossed Classification. Some Other Analyses. Introduction to Variance Components. Methods of Estimating Variance Components from Unbalanced Data. Variance Component Estimation from Unbalanced Data: Formulae. Literature Cited. Statistical Tables. Index.