1. Probability Trees
By Anthony Stones

2. ½ ½ Probability Tree for flipping a coin twice HH ½x½=¼ Heads ½ Heads
Outcomes
Probability
Probability Tree for flipping a coin twice HH
½x½=¼
Heads
Heads HT
½x½=¼
Tails
Flip a Coin TH
Heads
½x½=¼
Tails
Tails TT
½x½=¼

3. Probability Tree for rolling a die twice
Outcomes
Probability
Probability Tree for rolling a die twice
6, 6
1/6x1/6=1/36
Six
1/6
Six
1/6
Not Six
6, not 6
1/6x5/6=5/36
5/6
Throw a Die
1/6
Six
Not 6, 6
5/6x1/6=5/36
5/6
Not Six
5/6
Not Six
6, 6
5/6x5/6=25/36