Facts101 is your complete guide to Understanding and Using Statistics. In this book, you will learn topics such as MEASURES OF CENTRAL TENDENCY, MEASURES OF VARIABILITY, PROBABILITY: QUANTIFYING UNCERTAINTY, and THE NORMAL DISTRIBUTION AND ITS USE plus much more. With key features such as key terms, people and places, Facts101 gives you all the information you need to prepare for your next exam. Our practice tests are specific to the textbook and we have designed tools to make the most of your limited study time.