Hello! In fact, it is sequential data, because there are no equal units, but it is usually converted into equidistant data.

There are three types of data:

1, classified data is data that reflects the category of things, such as gender is divided into male and female. Seasons are divided into spring, summer, autumn, winter and so on.

2. Sequential data are special classified data, such as grades, which are divided into excellent and poor. Commodities can also be divided into first-class, second-class and third-class products according to quality. It can provide sequential arrangement.

3. Digital data is data expressed by numerical values, which can be used for mathematical operations. For example, the score is 60 points, 65 points, 100 points and so on. What is the height in centimeters and the weight in kilograms, etc.