Step 8 Objective
Know that the sum of probabilities of all mutually exclusive outcomes is 1, and use this when solving problems.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Examples of what pupils should know and be able to do
Arriving at the traffic lights at Hall Lane I know that the chance they are red is 0.4 and the chance they are green is 0.5. What is the chance they are on amber?
In an experiment find a missing probability and therefore a missing frequency.