D2. Probability Mass Functions Flashcards
1
Q
What type of data are PMFs used for?
A
Discrete variables.
2
Q
Define Probability Mass Function
A
A lidt of relative frequencies/probabilities associated with each of its possible values.
3
Q
What is the formal (mathematical) definition of PMF?
A
4
Q
What is the Bernoulli distribution?
A
General version of the PMF for coin tossing:
f(0) = P(X=0) = p, f(1) = P(X=1) = 1-p
5
Q
What is categorical distribution?
A
AKA generalised Bernoulli distribution, or multinoulli distribution.
6
Q
The PMF for binomial variables
A
