if you have small groups, use a pie chart. if you have lots of groups, use a bar graph
if your trying to show percentage and not change in percentage u use a pie graph
a circle graph
When you are trying to graph an equation.
A pie graph is used for percentage.
The main difference is that the vertical scale for a frequency graph is in units (or numbers) whereas in a percentage graph, it is in percentages,
pie graph
pie graph
They are useful for showing the percentage of the items. This is great graph for surveys, showing the percentage.
pie graph I suggest the best graph to show percentage is a circle graph because bar graphs are for numbers and lnie is way off. Pie graphs are made for percentage.
bar graph or pie chart
You use a circle graph when you need to find percentage and/or degrees.
pie graph