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Pie Chart


What is Pie Chart?

  • A pie chart is a graphic description of data in the figure of a circular graph or pie where the elements of the pie show the relative sizes of data. Each of these divisions or slices denotes the proportionate piece of the entire.
  • It is one of the most regularly applied graphs to design data.
  • A pie chart using the properties of circles, angular, and spheres data to draw real-world reports.
  • The other name of the pie chart is pie diagrams.

Pie Chart Example

Pie Chart Formula

Behalf of these factors, there are given below two mainly formulas applied in pie charts:

  • To find out the percentage of the given data, we apply the method:Pie Chart Formula
  • To change the data into degrees we apply the formula:formulas applied in pie charts

How to Create a Pie Chart?

A teacher surveys her class based on the favorite color of trainees :

Green Orange Red Pink Yellow
10 5 5 10 10

The data above can be represented by a pie chart as follows and by applying the circle graph formula, i.e. the pie chart method given below. It gives the size of the piece easy to follow.

Level 1: First, Insert the data into the table.

Green Orange Red Pink Yellow
10 5 5 10 10

Level 2: Combine all the values in the table to get the result.
I.e. Total trainees are 40 in this case.

Level 3: Following, divide all values by the total and multiply by 100 to obtain a percent:

Green Orange Red Pink Yellow
(10/40) × 100

=25%

(5/ 40) × 100

=12.5%

(5/40) ×100

=12.5%

(10/ 40) ×100

=25%

(10/40)× 100

=25%

Level 4: Next to understand how many degrees for all “pie slices” we require, we will take a full round of 360° and accompany the estimates below:

formulas applied in pie charts

Green Orange Red Pink Yellow
(10/ 40)× 360°

=90°

(5 / 40) × 360°

=45°

(5/40) × 360°

=45°

(10/ 40)× 360°

=90°

(10/ 40) × 360°

=90°

Step 5: Picture a circle and apply the protractor to estimate the degree of each slice.

How to Create a Pie Chart?

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