Feature summary
Currently, Extension:Charts has a bar chart option. The idea of bar chart is explained at https://en.wikipedia.org/wiki/Bar_chart
Reviewing https://www.mediawiki.org/wiki/Extension:Chart#Bar
This is a good bar chart, nicely done. This can be used for categorical data. There are gaps between the bars, which separate the categories.
Similar to bar charts, but different, however, are histograms. Histograms are explained at https://en.wikipedia.org/wiki/Histogram
The histogram's bars should be
- Potentially of variable width, because the bin size varies; it's the area that's important.
- Continuous, i.e. there should be no gaps between the bars. Histograms are used for continuous data.
Benefits:
Major type of chart, important in statistics.