Step 5 Objective
Understand the effect on the mean and median of altering the data.
Interpret diagrams and graphs (including pie charts) and draw simple conclusions based on the shape of graphs and simple statistics for a single distribution.
- 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
Given a data set with a stated mean and median, say what the effect will be of changing one or more values of the data set.
Pupils need to explain the individual elements of a bar graph. They should be able to compare values of one element with another, e.g. there are more boys with size 6 feet than there are with size 10 feet.