# Math Help - PMF

1. ## PMF

In a pmf P(X,Y) given in a table of values of x and y between 0 and 4 what does F(3,2) mean? Thanks

2. Hello,

Most probably, it would mean $F(3,2)=P(X\leq 3,Y\leq 2)=\sum_{x=0}^3\sum_{y=0}^2 P(x,y)$ (joint cdf)