We have two random variables.
I would like to know how to get the probabilities p1,p2,p3 ... of two random variable in a table?
I just know that the sum of all probabilites p1, p2, p3... must be equal to 1!
Just let $\displaystyle m=1,~2,~3~\&~n=1,~2,~3$ form a matrix $\displaystyle J=\left(a_{m,n}\right)$ where $\displaystyle a_{m,n}=P(x_m)\cdot P(y_n)$.