This handbook aims to be accessible to the major public. This work is meant to be used as a pedagogical tool and as a reference book. The following book represents personal reflections on the probabilistic nature of measures in science. In a classical curriculum these aspects are seldom, if not at all, dealt with. It is important that the experimental and practical foundations of science are complementary to the theoretical lectures. There is a scientific beauty that arises from the interaction between theory and experience. While introducing the fundamental principles of statistics, this book explains how to determine uncertainties in different experimental situations. Many examples come from courses and practical work done in preparatory classes for the engineering schools Source: Dr.Vaishali Dixit