How to Find Class Limits (With Examples)


In a frequency distribution, class limits represent the smallest and largest data values that can belong to each class.

Each class in a frequency distribution has a lower class limit and an upper class limit:

  • Lower class limit: The smallest data value that can belong to a class.
  • Upper class limit: The largest data value that can belong to a class.

The following examples show how to find class limits for different frequency distributions.

Example 1: Finding Class Limits in a Frequency Distribution

Suppose we have the following frequency distribution that represents the number of wins by different basketball teams:

The lower class limit is simply the smallest possible value in each class:

Conversely, the upper class limit is the largest possible value in each class:

How to find class limits

Example 2: Finding Class Limits in a Frequency Distribution

Suppose we have the following frequency distribution:

The lower class limit is the smallest possible value in each class:

And the upper class limit is the largest possible value in each class:

Additional Resources

How to Find Class Boundaries (With Examples)
How to Find Class Midpoints (With Examples)
How to Find Class Intervals (With Examples)

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