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# Unit: Probability

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### About this unit

Probability tells us how often some event will happen after many repeated trials. You've experienced probability when you've flipped a coin, rolled some dice, or looked at a weather forecast. Go deeper with your understanding of probability as you learn about theoretical, experimental, and compound probability, and investigate permutations, combinations, and more!### Learn

### Practice

- Simple probabilityGet 5 of 7 questions to level up!
- Comparing probabilitiesGet 5 of 7 questions to level up!

### Learn

### Practice

- Basic set notationGet 5 of 7 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

### Learn

### Practice

- Experimental probabilityGet 5 of 7 questions to level up!
- Making predictions with probabilityGet 5 of 7 questions to level up!

### Learn

### Practice

- Interpret results of simulationsGet 3 of 4 questions to level up!

### Learn

### Practice

- Adding probabilitiesGet 3 of 4 questions to level up!
- Two-way tables, Venn diagrams, and probabilityGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 400 Mastery points

### Learn

### Practice

- Sample spaces for compound eventsGet 3 of 4 questions to level up!
- Independent probabilityGet 3 of 4 questions to level up!
- Probabilities of compound eventsGet 3 of 4 questions to level up!
- Probability of "at least one" successGet 3 of 4 questions to level up!

### Learn

### Practice

- Dependent probabilityGet 3 of 4 questions to level up!

### Learn

### Practice

- Calculate conditional probabilityGet 3 of 4 questions to level up!
- Dependent and independent eventsGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 560 Mastery points

Up next for you:

Level up on all the skills in this unit and collect up to 1600 Mastery points!