12:0812:08, 30 January 2017diffhist−363
Conditional independence
The statement deleted was wrong. Conditioning on a variable can induce a dependence between two variables that were marginally independent. Consider 2 coin tosses, X \perp Y. But if Z is the sum of the number of heads, then X \perp Y| Z becomes false
12:0812:08, 30 January 2017diffhist−363
Conditional independence
The statement deleted was wrong. Conditioning on a variable can induce a dependence between two variables that were marginally independent. Consider 2 coin tosses, X \perp Y. But if Z is the sum of the number of heads, then X \perp Y| Z becomes false