Statistical and Data Handling Skills in Biology is an easy-to-use handbook which concentrates on essentials. It explains why certain mathematical concepts can help in biology and describes them in simple language and pictures with few equations. Numerous worked examples and problems from real biological situations are provided . The book first shows how to handle numbers and S.I. units. It then explains why variation is such a problem in biology and shows how to use statistical tests to separate real effects from the background variation. Finally it explains how to choose appropriate statistical tests to analyse data and how to improve the design of experiments. Students will develop confidence in dealing with numbers by working through the problems provided.