What is Pie chart

A Pie Chart is most important for Research and Education. maximum times researchers take the help of a pie chart for making decision about their research output. 

A pie chart (or a circle chart) is a circular statistical graphic which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area), is proportional to the quantity it represents. While it is named for its resemblance to a pie which has been sliced, there are variations on the way it can be presented. The earliest known pie chart is generally credited to William Playfair’s Statistical Breviary of 1801.

Pie charts are very widely used in the business world and the mass media. However, they have been criticized, and many experts recommend avoiding them, pointing out that research has shown it is difficult to compare different sections of a given pie chart, or to compare data across different pie charts. Pie charts can be replaced in most cases by other plots such as the bar chart, box plot or dot plots.

Pie Chart is general:

What do you think of when you hear the word ‘pie?’ You more than likely think of the delicious dessert with a flaky crust and the filling of your choice. A ‘pie’ is certainly different than a ‘pie chart,’ although, oddly enough, both can be divided up into slices.

A pie chart displays data, information, and statistics in an easy-to-read ‘pie-slice’ format with varying slice sizes telling you how much of one data element exists. The bigger the slice, the more of that particular data was gathered.

Let’s take, for example, the pie chart shown below. It represents the percentage of people who own various pets. As you can see, the ‘dog ownership’ slice is by far the largest, which means that most people represented in this chart own a dog as opposed to a cat, fish, or other animal.

Example:

Components Firm A
  Tk.(mn) 360°
Raw Material 75        180
Labor 30           72
Overheads 30           72
Profits 15           36
150

This article is written by taking the help from Internet and other resources like Books, journals etc.

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