Probability

Tree Diagrams (Multi-Stage)

Compute joint probabilities for a two-stage experiment using a probability tree. All four branches are labeled with conditional and joint probabilities, and verified to sum to 1.

Live Calculator · Step-by-Step · Probability

Inputs

P(A) — Probability of A at stage 1

P(B|A) — Probability of B given A

P(B|A') — Probability of B given A'

Result

Enter values and calculate.

Step-by-Step Work

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Probability Tree