Facts101 is your complete guide to Methods Matter, Improving Causal Inference in Educational and Social Science Research. In this book, you will learn topics such as Designing Research to Address Causal Questions, Investigator-Designed Randomized Experiments, Challenges in Designing, Implementing, and Learning from Experiments, and Statistical Power and Sample Size 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.