THE CLASSIC GUIDE NOW FULLY REVISED AND UPDATEDWhy do we need StatisticsWhat do terms like dispersion correlation normal distribution and significance actually meanHow can I learn how to think statisticallyThis bestselling introduction is for anyone who wants to know how statistics works and the powerful ideas behind it. Teaching through words and diagrams instead of requiring you to do complex calculations it assumes no expert knowledge and makes the subject accessible even to readers who consider themselves nonmathematical. This clear and informative tutorial in print includes questions for you to respond to in the light of what you have read so far ensuring your developing ability to think statistically.