# Probabilty

just a mind map suming up probabilty with link for videos

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- Created by: Priyanka
- Created on: 02-08-13 13:17

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- Number of ways an outcome can happen
- divided(÷) by total possible outcomes

- Probabilty
- How likely for something to happen
- Experimental probability
- video about probability

- video about tree diagrams
- rules of probabilty
- Must ALWAYS be written as a fraction, decimal and percentage
- The AND rule
- If a question is written like this: P(A and B)
- you times them together: P(A) x P(B)

- If a question is written like this: P(A and B)
- The OR rule
- If a question is written like this: P(A or B)
- you add them together: P(A) + P(B)

- If a question is written like this: P(A or B)

- Formulas for probabilty
- probability of an outcome
- Number of ways an outcome can happen
- divided(÷) by total possible outcomes

- Number of ways an outcome can happen
- relative frequency
- Number of times this outcome occurs
- divided(÷) by number of times you tried

- Number of times this outcome occurs
- Tree Diagrams
- ways of getting an outcome we want
- divided(÷)total outcomes

- ways of getting an outcome we want

- probability of an outcome

- you times them together: P(A) x P(B)

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