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Data – Histograms

Data – Histograms

A histogram is a specific type of bar chart

For a normal bar chart, each bar is the same width and it is the height of the bar that is important

For a histogram, the bars can be different widths and it is the area of each bar that is important, not the height

The vertical axis is always called frequency density

Frequency density = Frequency / Class Width

Histograms revision questions

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