Ex. 17.2

Ex. 17.2

Consider random variables X1,X2,X3,X4. In each of the following cases draw a graph that has the given independence relations:

(a) X1X3|X2 and X2X4|X3.

(b) X1X4|X2,X3 and X2X4|X1,X3.

(c) X1X4|X2,X3,X1X3|X2,X4 and X3X4|X1,X2.

Soln. 17.2

(a)

(b)

(c)