Definition:Class Interval

Definition
Let $D$ be a finite collection of $n$ data regarding some quantitative variable.

Also known as
A class, when used in this specific context, is also known as a class interval.

Comment
It is often the case that rational data are presented in decimal notation with a small and uniform number of digits for each datum.

In such cases the data may be artificially treated as integer data by "ignoring" the decimal point when creating the classes.