The Doughnut chart and pie chart, compares relative values of different categories to the whole
A bar chart.
A spectrum is a chart that arranges waves into different categories according to wavelength.
A bar chart or a pie chart.
Every pie chart has the same scale: " 360 degrees = the total of all categories "
electromagnetic spectrum
electromagnetic spectrum
It is called the "key".
No, you can also use Pie chart and Doughnut Chart.
Usually a column chart, but it depends on what exactly you want to do and the nature of the data.
It depends on what you are trying to show. If you want to show how the categories relate to the entire collection of data, use a pie chart. If you want to show how the categories relate to each other, you may want to consider a column chart. Recommend you try both in Excel (it takes little effort to drop two charts on a worksheet) and see which one displays the data the way you want.
Whitney Houston