Mathematical drawing is a commonly used method to express quantitative relations, which can show data changes and trends more clearly. In mathematical drawing, the common representation methods are line chart, pie chart, histogram, scatter chart and so on. Next, we will discuss these different representations and their usage scenarios in depth. 1. Linear graph

Linear graph is one of the most common mathematical drawing methods, which is usually used to represent the trend of data changing with time. In linear graphs, time is usually represented on the X axis, while variables that change with time are represented on the Y axis. The linear graph has a good display effect in analyzing the time trend and comparing the quantitative relationship.

2. Circular grid statistical chart

Pie chart is a mathematical drawing method used to express the proportion of quantity. It is usually used to express the proportion of parts to the whole, such as the proportion of sales of various categories and the proportion of population. The pie chart is similar to a circle in shape, which divides the whole into different sectors to represent quantities with different proportions.

3. Histogram

Histogram is a mathematical drawing method to express contrast relationship, which is usually used to compare the quantitative relationship between different variables. In the histogram, each variable is usually represented by a vertical bar, and the height of the vertical bar represents the quantity, so as to realize the comparative analysis of variables. Histogram is widely used in data analysis in economy, market and other fields.