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Maths Exercices

Interpret bar graphs

Bar graphs (charts) are a type of graph that are used to display and compare the number, frequency or other measure for different discrete categories of data.

The x-axis represents the different categories and so has no scale. In order to emphasise the fact that the categories are discrete, a gap is left between the bars on the x-axis. The y-axis does have a scale and this indicates the units of measurement.  

Mrs. Hall asked her students what kind of pet they have.

How many students have a pet bird? 2 students have a pet bird.

The students in Mr. Thompson's class selected their favorite color.

How many students like pink as their favorite color?

Solution: students