Synopsis The book Quantitative Techniques, is basically a treatise written to train the readers to use the techniques of mathematical and statistical analysis, which are commonly applied to understand and analyse economic problems. The thrust is on understanding the economic concepts with the help of mathematical methods rather than learning mathematics itself. The subject matter of the book is specially designed for use by students/teachers, who have got a rudimentary knowledge of mathematics and as such it is presumed that the readers are aware of only with elementary algebra and geometry. This book also deals with simple tools and techniques, which may help readers in the collection, compilation, presentation, analysis of data and drawing inference about statistical hypothesis. The book contains six modules (Three of mathematical methods and three of statistical methods) which runs in Twenty One chapters. Various mathematical concepts like Functions, Limits and Continuity, Differential and Integral Calculates, Input-output analysis, Game Theory, linear programming, etc. are dealt with the help of illustrations from economics. Similarly, various statistical tools like Correlation and Regression analysis, Estimation and Testing, Probability, Census and Sample investigations, etc., are also dealt in separate chapters in last three modules. The book is supposed to fulfill the object in all its perfection, but no one can claim for complete perfection, so is the case with this book also.