Stats

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Author:
Anonymous
ID:
267752
Filename:
Stats
Updated:
2014-03-24 19:27:34
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stats
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  1. The union of A or B
    consists of all outcomes that are in at least one of the 2 events, that is in A OR B OR in both

    A U B
  2. Interesection
    consists the outcomes of both events

    A AND B = A (upside down) P
  3. Mutually exclusive (disjoint)
    2 events have no outcomes in common: two events that never happen simultaneously
  4. Classic Approach
    P(E)= favorable outcomes/total outcomes
  5. Relative Frequency
    P(E)= #of times E occurs/# of trials
  6. Addition Property (if they are disjoint)
    P(E or F)= P(E)+P(F)
  7. Complement Property
    P(E)+P(not E)=1
  8. Conditional Probability
    P(B/A)=

    • P(A upside B)
    •       P(A)
  9. Multiplication Rule for 2 independent events
    P(E upside down U F)= P(E)xP(F)
  10. Disjoint events
    P(E U F)= P(E)+P(F)
  11. Independent events
    P(E upside down U F)= P(E)xP(F)

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