Probability Distributions Flashcards
1
Q
What does probability add up to?
A
1
2
Q
What is a random variable?
A
-variable that takes different values with different probabilities
3
Q
What is a discrete variable?
A
-random variable that can take only a certain number of variables
4
Q
What is probability distribution?
A
-table showing all possible values a discrete random variable can take
5
Q
What is a probability function?
A
P(X=x)
6
Q
What is P(A|B)?
A
P(A)
7
Q
What is P(B|A) when independent?
A
P(B)
8
Q
What is P(A) x P(B)?
A
P(AnB)
9
Q
What does a sample space show?
A
-all possible outcomes
10
Q
What does a discrete probability distribution show?
A
-tell us what each probability of getting a certain thing are
