Probability Flashcards
1
Q
Relative frequency of A equation
A
number of time event A occurs/ total number of trials
2
Q
A U B
A
A or B or both
whole of the venn diagram
3
Q
A n B
A
A and B
the intersection
4
Q
A’
A
probability that A doesn’t occur
5
Q
P(B|A)
A
P(A n B) / P(A)
6
Q
P(A U B) addition law
A
P(A) + P(B) - P(A n B)
7
Q
what is said if 2 events are mutually exclusive
A
P(A n B) = 0
8
Q
Addition law for mutually exclusive events
A
P(A U B) = P(A) + P(B)
9
Q
Multiplication laws for 2 events
A
P(AnB) = P(A) x P(B|A)
P(AnB) = P(B) x P(A|B)
10
Q
Multiplication law for 2 independent events
A
P(AnB) = P(A) x P(B)
