Pie-diagram:
- A pie diagram (or a circle chart) is a circular statistical diagram which is divided into slices to illustrate numerical proportion.
- Division of a circle in degrees represents a pie diagram.
- If an entire circle is considered as universal set of an entire data and the different sections of this data are represented by dividing the circle in degrees proportional to the data then a pie diagram is obtained.
- Note that we can draw pie diagram for the similar type of data for which a bar diagrams can be drawn.
- The complete circle represents 360°. Hence, the entire data represents 360° and sections/divisions of the data are represented by dividing the circle in degrees proportional to each data section.
Formula for obtaining proportional degree for a section of data:
Degree = \(\frac{Component\, value}{ Total \,value} × 360\)
The data below shows the percentage of pocket money spent by a student on various items.
Percentage of pocket money spent by a student on various items
