This book has brought out some applications of linear models by using various concepts in the Linear Algebra.Most of the Applied Regression analysis techniques are based in the concept of linear model.It describes the applications of some advanced concepts in the matrix theory to linear models.The specification, estimation and various inferential aspects of linear statistical models have been discussed.The various problems of Mathematical and Statistical linear models have been presented in this book.It contains some applications of generalized Inverse matrices to the linear models