Pie Graph Worksheets

This ring chart sample was redesigned from the Wikipedia file: Virtuous circle in management.svg.
"An example of the use of a virtuous circle in management."
[en.wikipedia.org/ wiki/ File:Virtuous_ circle_ in_ management.svg]
"A virtuous circle and a vicious circle (also referred to as virtuous cycle and vicious cycle) are economic terms. They refer to a complex chain of events that reinforces itself through a feedback loop. A virtuous circle has favorable results, while a vicious circle has detrimental results.
Both circles are complexes of events with no tendency towards equilibrium (at least in the short run). Both systems of events have feedback loops in which each iteration of the cycle reinforces the previous one (positive feedback). These cycles will continue in the direction of their momentum until an external factor intervenes and breaks the cycle. The prefix "hyper-" is sometimes used to describe these cycles if they are extreme. The best-known example of a vicious circle is hyperinflation. ...
Example in management.
Virtuous circle.
An employer's investment in his employees’ ability to provide superior service to customers can be seen as a virtuous circle. Effort spent in selecting and training employees and creating a corporate culture in which they are empowered can lead to increased employee satisfaction and employee competence. This can result in superior service delivery and customer satisfaction. This in turn will create customer loyalty, improved sales levels, and higher profit margins. Some of these profits can be reinvested in employee development, thereby initiating another iteration of a virtuous cycle." [en.wikipedia.org/ wiki/ Virtuous_ circle_ and_ vicious_ circle]
The ring chart example "Virtuous circle (management)" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Target and Circular Diagrams solution from the Marketing area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ marketing-target-and-circular-diagrams

This pie chart sample shows the approximate composition of the air.
"The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention (greenhouse effect), and reducing temperature extremes between day and night (the diurnal temperature variation).
The common name given to the atmospheric gases used in breathing and photosynthesis is air. By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1%. Although air content and atmospheric pressure vary at different layers, air suitable for the survival of terrestrial plants and terrestrial animals currently is only known to be found in Earth's troposphere and artificial atmospheres." [Atmosphere of Earth. Wikipedia]
This pie chart sample was redesigned from the Wikimedia Commons file: Air composition pie chart.JPG.
[commons.wikimedia.org/ wiki/ File:Air_ composition_ pie_ chart.JPG]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
The pie chart example "Approximate composition of the air" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Basic Pie Charts solution of the Graphs and Charts area in ConceptDraw Solution Park.