For a discrete r.v., the probability mass function is one way to describe the probability distribution of a variable . It is written as , and is given by
We are asking for the probability that equals .
Search
For a discrete r.v., the probability mass function is one way to describe the probability distribution of a variable X. It is written as pX, and is given by
pX(u)=P(X=u)We are asking for the probability that X equals u.