Tufte Edward. Data analysis for politics and policy

Englewood Cliffs: Prentice-Hall, Inc., 1974. - 176 p.This book demonstrates some statistical techniques useful in the study of politics and policy. The aim is to present fundamental material not found in statistics books, and, in particular, to show techniques of quantitative analysis in action on problems of politics and public policy. Most of the examples can be understood without a mathematical or statistical background; some sections require familiarity with basic statistical inference. Not all methodological bases are touched; still, in the chapters that follow, quite a number of important statistical concepts are illustrated. More fundamental,
however, is the illustration and development of good statistical thinking--a sense of judgment about what we can and can't learn about the world by looking at quantitative data. Much of this material was first prepared for courses were held at Princeton University.Introduction to data analysis
Predictions and projections: some issues of research design
Two-variable linear regression
Multiple regression