This is the second edition of ''Statistics in Spectroscopy'' with additional and edited material to the first edition. This work was originally developed from the popular series ''Statistics in Spectroscopy'' first published in Spectroscopy magazine; this tutorial offers a basic hands-on approach to statistical analysis for chemistry and spectroscopists.Without employing complicated mathematics, this book explicates the basic principles underlying the use of common mathematical and statistical tools. Emphasis has been given to problem-solving applications and the proper use and interpretation of spectroscopic data.The aim of the book is to bridge the gap between the average chemist/spectroscopist and the study of statistics. This second edition differs from the first in that expanded chapters are incorporated to highlight the relationship between elementary statistics and the more advanced concepts of chemometrics. The book introduces the novice reader to the ideas and concepts of statistics and uses spectroscopic examples to show how these concepts are applied. The advent of instrumentation and methods of data analysis based on multivariate mathematics has created a need to introduce the non-statitician to the ideas, concepts and thought processes of statistics and statisticians. Several key statistical concepts are introduced through the use of computer programs. The new sections on chemometrics include an exercise showing that there is a deep and fundamental connection between the two, supposedly different, disciplines of statistics and chemometrics.This book is relevant to all spectroscopists and those involved in statistics and analysis of data, both chemical and biological, especially those in chemistry, statistics, computer science and biology departments. Also relevant to the manufacturing, pharmaceutical, agricultural and textile industries, and all large corporations with analytical chemistry and chemical engineering departments.