Stats
Card Set Information
Author:
Anonymous
ID:
267752
Filename:
Stats
Updated:
2014-03-24 19:27:34
Tags:
stats
Folders:
stats
Description:
stats
Show Answers:
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
Interesection
consists the outcomes of both events
A AND B = A (upside down) P
Mutually exclusive (disjoint)
2 events have no outcomes in common: two events that never happen simultaneously
Classic Approach
P(E)= favorable outcomes/total outcomes
Relative Frequency
P(E)= #of times E occurs/# of trials
Addition Property (if they are disjoint)
P(E or F)= P(E)+P(F)
Complement Property
P(E)+P(not E)=1
Conditional Probability
P(B/A)=
P(A upside B)
P(A)
Multiplication Rule for 2 independent events
P(E upside down U F)= P(E)xP(F)
Disjoint events
P(E U F)= P(E)+P(F)
Independent events
P(E upside down U F)= P(E)xP(F)