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Have you always been scared to death of statistics? You and just about everyone else! The equations are extremely intimidating, and the terminology sounds so . . . boring. Why, then, is statistics so important? All business disciplines can be analyzed with statistical principles. Statistics make it possible to analyze real-world problems with actual data so that we can understand if our marketing strategy is really working, or how much a company should charge for its products, or any of a million other practical business questions. Without a formal framework for analyzing these types of situations, it would be impossible to have any confidence in our results. This is where the science of statistics comes in. Far from being an overbearing collection of equations, it is a logical framework for analyzing practical business problems with real-world data. This book is designed to show you how to apply statistics to practical situations in a step-by-step manner so that by the time you’re done, you’ll know as much about statistics as people with far more education in this area! All business degrees require at least some statistics courses, and there’s a good reason for that! All business disciplines are empirical by nature, meaning that they need to analyze actual data to be successful. The purpose of this book is to: »»Give you the principles on which statistical analysis is based »»Provide you with many worked-out examples of these principles so that you can master them »»Improve your understanding of the circumstances in which each statistical technique should be used As a For Dummies title, this book is organized into modules; you can skip around and learn about various statistical techniques in the order that suits you. In cases where the contents of a chapter are based on previous readings, you are guided back to the original material. Along the way are many helpful tips and reminders so that you get the most out of each chapter. I explain each equation in great detail, and all key terms are explained in depth. In this updated Second Edition, I show you how to use the Texas Instruments TI-84 Plus and TI-84 Plus CE calculators to obtain results quickly and easily for just about every problem you will encounter in this book. I also added a new chapter that shows how easily statistical problems can be solved using Microsoft Excel. This book can’t make you an expert in statistics, but it provides you with a way of improving your knowledge very quickly so that you can use statistics in practical settings right away.