Probability

Probability

1. THEORETICCAL PROBABILITY FORMULA

   • P(E)=number of favorable outcomes /total number of outcomes

2. ADDITION RULE OF PROBBABILITY

   • Events that are MUTUALLY EXCLUSIVE have no results in common
   • P(A U B)=P(A)+P(B)-P(A n B) P(A U B)=P(A)+P(B)

3. PROPERTIES OF PROBABILITY

   • Certain Event
   • impossible event

4. OUTCOMES: the posible results of the experiment

5. SAMPLE SPACE: the set of all possible outcomes

6. EMPIRICAL PROBABILITY FORMULA

   • P(E)=number of times the event ocurred /number of times the experiment was performed.

7. EVENT: any such subset of the sample

8. EXPERIMENTS: any observation or measurement of a random phenomenon

9. SET OPERATIONS

   • COMPLEMENT(A'U B)
   • DIFFERENCE ( A-B)={X/XAyB}
   • INTERSECTION: (A n B)
   • UNION (A U B)

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