Step 9 Objective
Understand relative frequency as an estimate of probability and use this to compare outcomes of experiments.
- 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
Complete a relative frequency table from an experiment with two spinners.
Recognise that, with repeated trials, experimental probability tends to a limit.
Understand that relative frequency may be the only realistic way of estimating the probability, particularly when events are not equally likely.
Consider real-life situations that have no theoretical probability, such as the chance of a plane crash, and understand that judgements can only be based on the empirical evidence.
Consider how the probability changes in different circumstances, for example, the chance that a drawing pin lands point up given different-shaped pins.