The material given provides basic statistical techniques required by students of engineering, computer science and business studies. The concepts are put in a systematic way and exercises are given at the end of each chapter. This book has been written with the purpose of providing the basic statistical techniques required by students of Engineering, Computer Science, Business Studies and Medicine for the statistical work in their field, which involves Probability Distributions of a Single Random Variable. It also aims to provide a sound basis for students of Mathematics, Statistics, Actuarial Science, Financial Engineering, Biostatistics, Operational Research, Physical Science and Research Methodology, who intend to pursue further study in Probability and Statistics at graduate level.