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Introduction to Probability
Probability measures how likely an event is, on a scale from 0 (impossible) to 1 (certain).
The Probability Scale
| The probability scale | ||
|---|---|---|
Example 1 — describing a sample space and event
A standard die is rolled. Describe the sample space, and the event "rolling an even number."
- Sample space (every possible outcome): {, , , , , }
- Event "rolling an even number": the outcomes {, , }
Practice
What is the sample space for flipping a coin?
More lessons in Descriptive Statistics and Basic Probability · Next: Calculating Simple Probability · Previous: Comparing Data Sets
