# 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)
 Author: Anonymous ID: 267752 Card Set: Stats Updated: 2014-03-24 23:27:34 Tags: stats Folders: stats Description: stats Show Answers: