📂Data Science

Quantitative Data Classification

Definition ¹

1. The intervals created by setting upper and lower limits according to the values of quantitative data are called classes.
2. The number of data that belongs to each class is called frequency.

Explanation

Just as the academic term Class is translated into class in a straightforward manner in statistics, the part that might seem grating, like the term ‘class’ rather than ‘category’ which might come up in areas such as set theory and equivalence classes, actually involves thinking about categorizing - a process to distinguish quantitative data like the frequency of qualitative data. Thus, the organized data in the form of a frequency distribution table is also referred to as grouped data.

On the other hand, since a class is defined as an interval, it is important to remember that the perspective on the data can change depending on how these classes are defined. Although it is not recommended, it is not necessary for all classes to be of the same size.

See Also

• Frequency of Qualitative Data
• Classes of Quantitative Data