General multiplication rule
P(A&B)= P(A) *P(B/A) writinga tree diagrom is helpful when applying general multiplication rule
- a formula for computing joint probabilities in terms of mariganl and conditional probabilities.
- When the joint and marginal probabilities are known or can be easily determined directly, we use the conditonal probability rule to obtain conditional probabilities.
- When marginal and conditional probabilities are known or can be easily determined directly, we use the general multiplication rule to obtain joint probabilities.