For the same sorts of uses as they are today : to illustrate how a total value is divided into smaller groups.
A pie chart (a circle divided into slices of various angular widths) is used to show comparative percentages within a whole. The size of a slice is proportional to the share that is assigned to a given subgroup, role, or division. For example, a pie chart for business revenue can be divided into wedges showing the sources of that revenue (sales, stock dividends, Franchising), and the sales wedge could be 2/3 or 3/4 of the pie, with other earnings areas having smaller slices.
pie charts show the percentage of whatever the chart is displaying and bar charts show the improvement or difference in what the chart is showing. they are the same because if both the pie chart and bar chart are being used for the same situation, the data should be the same.
bar charts and pie charts
The first pie chart was created in 1801 by William Playfair. He was a Scottish business man as well as an engineer, and used this first pie chart as a form of illustration.
The earliest known pie chart is generally credited to William Playfair's Statistical Breviary of 1801, where two such graphs are used. This is according to WikiPedia.
Column charts Bar charts Line charts Pie charts XY (Scatter) charts Area charts Doughnut charts Radar charts Surface charts Bubble charts Stock charts Cylinder, Cone, or Pyramid charts See related links for detailed descriptions of all the chart types.
pie charts are best used for business
they are used for percentages of a whole.
Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.Bar charts, Area charts, Pie charts and Line charts.
Yes. Angles are used to draw pie charts so that each portion has an equal amount of the circle by the total.
When you need to put information together.
Pie charts are not normally used for trends.
Pie charts only show you the percentage, But it dose not show you the major trends in a pie chart
1801
Bar, Column, Line & Pie.
One view:Because they just are. Pi is a Greek letter and most mathematics came from the Greeks.Another view:According to wikipedia, it is spelled the same as "pie" because it is named for its resemblance to a pie which has been sliced. The wikipedia goes on to suggest "The earliest known pie chart is generally credited to William Playfair's Statistical Breviary of 1801." The originator of the chart might not have been familiar with the Napoletana cuisine at that time he conceived of its name.One more view:Pi is an integral part of the circle. R=(pi)r2. A pie chart is a circle.
pie charts show the percentage of whatever the chart is displaying and bar charts show the improvement or difference in what the chart is showing. they are the same because if both the pie chart and bar chart are being used for the same situation, the data should be the same.
Pie and Doughnut charts.