Video Crash Courses
Want to watch animated videos and solve interactive exercises about histograms?
A histogram looks very much like a bar chart. But there are three main differences between the two. There are intervals—not numbers—along the
You use a histogram when your data is sorted into groups of intervals.
Theory
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Example 1
Sarah is measuring how fast cars are driving on a road with a
Speed (mph) | Number of cars |
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Make a histogram that fits this table.
You begin by calculating the width of the intervals:
The next step is to calculate the height of the histogram by dividing the frequency with the width of the intervals:
You can now make the following histogram: