Probability

Probability

1. Outcomes: All the answers

2. Sample Space: All the posibilities

3. Experiments: Anything you want to get

4. Events

   • "Not"
     • P(E)+P(E´)=1
   • "Or"
     • Addition Rule: P(AUB)=P(A)+P(B)-P(AnB)
       • Mutually Exclusive Events: P(AUB)=P(A)+P(B)
   • "And"
     • Conditional Formula: P(B/A)=P(AnB)/P(A)
     • Multiplication Rule
       • Independing Events: P(AnB)=P(A)*P(B)
       • Any two events: P(AnB)=P(A)*P(B|A)

5. Venn Diagrams

6. Theorical Probability

   • P(E)=N° of favorable outcomes/total N° of outcomes

7. Empirically Probability

   • P(E)= N° of times the event ocurred/ N° of times the exeriment was performed

8. Properties

   • Probabilitites Value
   • Impossible Event P(0)=0
   • Certain Event P(S)=1

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