This book provides a comprehensive discussion on descriptive statistical procedures and methods needed for analyzing educational test scores and assessment data. The key feature of this book is that it discusses all the statistical concepts in a very simple manner to facilitate the reader to understand the subject matter clearly and easily.  This book gives a brief introduction to basic statistical concepts and  also the detailed discussion on the topics of organization of test scores, measures of central tendency, measures of dispersions, scores, normal distributions, score transformation correlation and regression for all the themes. This book also includes practicing  exercises and answers for the self learner.