Jointly continuous PDF Just as with one random variable,the joint density function contains all the information about the underlying probability measure if we only look at the random variables X and Y. In particular,we can compute the probability of any event defined in terms of X and Y just using f(x,y). 7Jointly continuous PDF • Just as with one random variable, the joint density function contains all the information about the underlying probability measure if we only look at the random variables 𝑋 and 𝑌 . • In particular, we can compute the probability of any event defined in terms of 𝑋 and 𝑌 just using 𝑓(𝑥, 𝑦). 7