Refers to quantitative trait data obtained by counting

Quantitative trait data obtained only by measurement methods such as measurement tools such as measures, quantities, and scales

Within a certain population or sample, count the number of times according to the category of a certain quality trait, and use the number of times as the quantity of the quality trait.

This method uses different numbers to represent the difference in the degree of manifestation of a certain phenomenon.

Range (R) is the difference between the maximum value and the minimum value in the data, also known as the range

Group distance refers to the difference between the maximum value and the minimum value of each group

The maximum and minimum values ​​of each group are called group limits, the minimum value is the lower limit, and the maximum value is the upper limit. The midpoint value of each group is called the group median, which is the representative value of the group. Group median 🟰 (Group upper limit ➕ Group lower limit) / 2 🟰 Group lower limit ➕ Group distance / 2 🟰 Group upper limit ➖ Group distance / 2

After the grouping is completed, group each observation value in the data one by one, draw lines and count, and then make a frequency distribution table

The title describes the main symbol of the thing concisely and accurately.

The headings are divided into horizontal headings and vertical headings.

Always use Arabic numerals, the numbers are aligned with decimal points, and the number of decimal places is the same. If there are no numbers, use "-" to indicate.

simple table

Composite table

The title of the statistical chart should be concise and to the point and listed below the chart.

There should be scales on the horizontal and vertical axes, with units indicated. The horizontal axis goes from left to right, the vertical axis goes from bottom to top, and the values ​​are from small to large.

The graphic aspect ratio is approximately 5:4 or 6:5

When different colors or lines are used to represent different things in a picture, there should be a legend

Histogram

polygon diagram

Bar chart

circle diagram

line graph