In an increasingly data-driven world, it is more important than ever for students as well as professionals to better understand basic statistical concepts. 100 Questions (and Answers) About Statistics addresses the essential questions that students ask about statistics in a concise and accessible way. It is perfect for instructors, students, and practitioners as a supplement to more comprehensive materials, or as a desk reference with quick answers to the most frequently asked questions.

# Why Is Probability Important to the Study of Statistics?

### Why Is Probability Important to the Study of Statistics?

Much of what you learn in studying statistics has to do with the normal or the bell-shaped curve.

Understanding the normal or bell-shaped curve allows us to understand how a probability, or the likelihood of an occurrence, can be associated with any outcome. For example, how likely is it that a student will receive a score of 87 on a test on which the class average was 93? Or, how likely is it that sales in the Midwest office of a national real estate company are representative of sales at all offices throughout the nation?

Assigning a probability to an outcome allows us to come up with answers to such questions.

We can determine whether the probability of ...