Introduction
As the name suggests, a pie chart is a pie-shaped graph. It is a commonly used chart type and is usually used to show the proportion relationship of data. By dividing a circular area into multiple sub-areas, the pie chart reflects the comparative relationship between different sub-category data and the percentage of sub-category data in the main category. A pie chart represents a data set as a circle according to the proportion of each data item, and then divides the circle into fan-shaped areas of different sizes. The size of each fan-shaped area represents the data item The proportion of size.
Through the pie chart, people can intuitively understand the proportion of each data item for better comparison and analysis. Pie charts are usually used to display relevant information such as data composition ratio, market share, and expenditure ratio.
Applicable scene
Pie charts are suitable for the following scenarios:
① Displaying the proportion of each part in the whole can help people intuitively compare the size relationship between different parts.
② Displaying the relative proportions of classified data, especially when there are obvious size differences between different parts, can better highlight the characteristics of the data.
③ It is suitable for displaying a small amount of data. The amount of data in the pie chart should not be too much, otherwise the pie chart will be too complicated and it will be difficult to clearly express the data.
④ Pie charts are suitable for visualizing data, which allows non-professionals to easily understand data, and is a commonly used data visualization method.
......
It should be noted that when using pie charts, avoid situations where the data is too complex or a certain part of the data is too small to be easily recognized. Also, pie charts are not suitable for displaying time series data.
Advantages and disadvantages
A pie chart is a common statistical chart that displays the relative size and proportion of data in a circular manner.
(1) Its main advantages include:
①Easy to understand: Pie charts can usually visually display the proportion of data, making it easy for viewers to understand the proportional relationship between data.
②Easy to make: Compared with other complex chart types, pie charts are easy to make and edit, suitable for beginners and quick production.
③Good visualization effect: Pie charts usually have a pie shape, which can express the proportion relationship of data more clearly.
(2) The disadvantages of the pie chart are:
① Not suitable for displaying a large amount of data: When there is too much data in the pie chart, the readability of the chart will be affected. At this time, in order to make the data clear and readable, you need to subdivide the chart into more pie charts or choose another type of chart.
②Easy to misunderstand: Since pie charts can only display data in a single dimension, audiences may be misunderstood when comparing different data sets, especially when the differences between the data are small.
③ Not suitable for complex data: If the relationship between the data is complex, using a pie chart may not be intuitive, because it can only display data in a single dimension.