Probability Flashcards
1
Q
What do the probabilities of all outcomes add up to
A
1
2
Q
Union?
A
When one or both events happen
3
Q
Complement ?
A
When an event does not happen
4
Q
Mutually exclusive ?
A
They have no outcomes in common
5
Q
Independent?
A
Events that have no effect on each other
6
Q
Complement of A?
A
A’
7
Q
What is the equation to calculate P(A’)
A
1-P(A)
8
Q
WHAT is the value for mutually exclusive events P(A and B)
A
0
9
Q
For mutually exclusive events calculate the value for P(A or B)
A
P(A) + P(B)
10
Q
What is the equation for independent events when P(A and B)
A
P(A) x P(B)
11
Q
What is the equation to calculate the probability of B given A has occurred
A
P(B|A) = P(A and B) / P(A)
This is vice versa from P(A|B)
12
Q
What is the equation to calculate the probability of two successive events happening ?
A
P(A) x P(B)
