A logical question to ask when we see a measure of a model's goodness-offit is “What is a good or bad value for the root MSE and/or R2?” This is not an easy question to answer. In part, the answer depends on what you are trying to do ...
This textbook introduces the scientific study of politics, supplying students with the basic tools to be critical consumers and producers of scholarly research.
New edition providing an introduction to the scientific study of politics, refined discussions of concepts and a chapter on writing about an original research project.
This revised third edition features new 'Your Turn' boxes meant to engage students. The edition also has new sections added throughout the book to enhance the content's clarity and breadth of coverage.
The text's accessible presentation of mathematical concepts and regression models with two or more independent variables is a key component to this process, along with the integration of examples from political science and the real world to ...
This revised second edition refines discussions from the first edition, with a new chapter on how to write an original research project.