Tree Diagrams Unconditional Demonstration This resource provides animated

Tree Diagrams – Unconditional – Demonstration This resource provides animated demonstrations of the mathematical method. Check animations and delete slides not needed for your class.

John flips a coin and Jane rolls a dice. These are independent events. What is the probability the result is tails and a 6? Coin Flip Dice Roll ds a e H 6 a D N A 6 H 6 H 1 -5 H 1 -5 Results 6 T 1 -5 T 1 -5

Unconditional Tree Diagrams ① To win the league, Burham United need to win against Wedly Wanderers & then Rexham Rovers. What is the probability Burham win the league (win both matches)? Vs. Wedley Vs. Rexham Win WW Win Lose Result Win WL LW Lose LL

② What is P(not sunny all weekend)? Saturday Sunday Sunny SS Sunny Not Sunny Result Not Sunny SN NS NN

There are black and white marbles in the box. Box & Marbles One is picked – and replaced – then another is picked. What is the probability both picks are the same colour? 1 st Pick 2 nd Pick Result Black BB Black White Black BW WB White WW ③

④ The probability Jill passes her Geography test is 0. 8 The probability Jill passes her Science test is 0. 4 What is the probability she passes only one of the tests? Geography Test Science Test Result Pass PP Fail PF Pass FP Fail FF Pass Fail

A coin and a dice were thrown. What did Mary do wrong? 1 st Event 2 nd Event What is the possibility of getting a Tails and a 6? Results 1 -5 T 6 T 6 1 -5 H 6 H 1 -5 H 6

A coin and a dice were thrown. What did Mary do wrong? 1 st Event 2 nd Event What is the possibility of getting a Tails and a 6? Results 1 -5 T 6 T 6 1 -5 H 6 H 1 -5 H 6

Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths. co. uk