What is meant by a circular diagram?

A circular diagram, also known as a pie chart or a pie graph, is a visual representation of data that is divided into different categories or sections. It is called a circular diagram because it is shaped like a circle and the sections of the circle represent the proportionate distribution of the data.

Method of construction:

Constructing a circular diagram involves several steps, including gathering the necessary data, calculating the proportions, and creating the chart. Here is a detailed explanation of the method of construction:

1. Gather the data:
- Identify the categories or sections that you want to represent in the diagram.
- Collect the data related to each category. This data should represent the values or frequencies associated with each category.

2. Calculate the proportions:
- Calculate the total value or sum of the data.
- Determine the proportionate value or percentage of each category by dividing its value by the total value and multiplying by 100.
- Round off the calculated percentages to an appropriate number of decimal places for clarity.

3. Create the chart:
- Draw a circle on a piece of paper or use a software tool to create the diagram.
- Divide the circle into sections based on the calculated proportions. The size of each section is determined by the percentage it represents.
- Label each section with the corresponding category and its percentage value.
- Use different colors or patterns to distinguish between the sections and make the diagram visually appealing.
- Add a title and a legend if necessary to provide additional information or context.

4. Interpret the diagram:
- Analyze the diagram to understand the distribution of data among the different categories.
- Identify any significant patterns or trends that may be apparent.
- Compare the sizes of the sections to make comparisons between categories.

Conclusion:

A circular diagram is a useful tool for visually representing data and displaying the proportionate distribution of different categories. By following the steps outlined above, you can construct a clear and informative circular diagram that effectively communicates the data to the viewers.

A pie chart / pie diagram is known as cirular or component diagram.
Explanation ..
1. Angles=individual value /total value ×360
2.find cumulative frequency (Cf) of all the angles .
3.draw the diagram and plot the angles .