http://www.pocanticohills.org/civilwar/graphs.htm
Pie graphs are good for showing a percent of something.
Yes.
data of what u want
pie graphs show volume and are good for showing the relationship of size. line graphs are good for showing trends which can lead to predictions.
Bar graphs, pie charts, and even line graphs can all be used to compare. I personally like to use Bar graphs when showing numbers.
Yes.
They are a useful device for showing parts or shares of totals.
the rate increase as you do more work
Learning to think critically about what graphs show us
It is great for showing a unit over time. This is usually a profit from a product.
bar or pie graph
Bar graphs can compare two sets of data, as well as line graphs and circle graphs. To better improve my answer, double line graphs and double bar graphs compare two sets of data. Circle graphs cannot however, because they compare parts of a whole instead of, as a bar graph would, the amount of something. A circle graph is also incapable of showing data growth over a period of time, as line graphs do. All in all, circle graphs cannot compare to sets of data, and bar graphs and line graphs must be doubled to do so.