The ages of children arriving at a zoo in 1 hour are noted by the ticket salesman. There are 12 children between 0 and 3 years old, 14 children between 4 and 10 years old and 48 between 11 and 18 years old.

He draws a bar graph or frequency diagram to represent this data.

One of the children tells him that it would be better to represent the data in a histogram and she draws the diagram below.




Compare the two diagrams.

Which do you think is better?  Give reasons.

Click here to download the Notes for Teachers – Best Representation

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