Graphs, charts and tables
A maths test is marked out of 50. The marks for the class are shown below:
This data can be more easily interpreted if we represent it in a stem and leaf diagram.
This stem and leaf diagram shows the data above:
The stem and leaf diagram is formed by splitting the numbers into two parts - in this case, tens and units.
The tens form the ‘stem’ and the units form the ‘leaves’.
This information is given to us in the key.
It is usual for the numbers to be ordered. So, for example, the row
shows the numbers 21, 23, 24, 24, 25 and 27, in order.
6 people had a score of more than 40
To find this, look down the 'stem' to the row labelled '4', and don't forget to include the child who scored 50!
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