Step 4 Objective
Solve a problem by representing, extracting and interpreting data in tables, graphs and charts. Calculate statistics for small sets of discrete data:
- Find the mode, median and range;
- Calculate the mean in simple cases.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Probing questions
For a given graph, table or chart, make up three questions that can be answered using the information represented. What makes the information easy or difficult to represent?
The number cards shown below were chosen from a pack:
What is the value of a fifth card if:
- the mean of all the cards is 4?
- the range of all five cards is 3?
List a small set of data that has a mean of 5.
List a small set of data that has a mean of 5 and a range of 10.
List a small set of data that has a range of 12 and a mean of 6.
How did you work this out?