Data Science, Data, Statistics, Statistical Analysis, Data Analysis.
Probability Mass Function (PMF) Let X be a discrete random variable, and suppose that it has n possible values, which we will label x1, x2, ……,xₙ. P(X) is the probability of the event X. For a discrete random variable X, we define the probability mass function p(x) of X by p(xᵢ) = P(X=xᵢ). A