AP Statistics
Advanced Placement Statistics covering data analysis, probability, and statistical inference.
Basic Concepts
Understanding Probability
The Basics of Chance
Probability is all about measuring how likely something is to happen. Whether you're flipping coins, rolling dice, or predicting the weather, probability helps you make sense of uncertainty.
Calculating Probability
The probability of an event is:
\[ P(\text{event}) = \frac{\text{Number of favorable outcomes}}{\text{Number of possible outcomes}} \]
Types of Events
- Independent events: One does not affect the other (like two coin flips).
- Dependent events: One outcome influences the other (drawing cards without replacing them).
Why Probability Matters
Probability is used in games, science, weather forecasts, and even health decisions!
Examples
Calculating the chance of rolling a 6 on a fair die.
Predicting the probability of rain using weather data.
In a Nutshell
Probability helps us predict how likely events are to happen.