How much should we trust the polls on the latest electoral campaign? When a physician tells us that a diagnosis of cancer is 90% certain or a nutritionist tells us what is healthy to eat, what should we believe? Questions such as these are greatly important, yet many of us have only a vague sense of how to answer them. In Is That a Fact?, Mark Battersby aims not only to explain how to identify misleading statistics and research, but also to give readers the understanding necessary to evaluate and use statistical information in their own decision making. This second edition is revised and updated throughout and includes a new chapter on weighing risk in personal and public decision making.