What is Class Size?
Class size refers to the width or range of a class interval in a frequency distribution. It is calculated as the difference between the upper limit and the lower limit of a class.
Formula
[
\text{Class Size} = \text{Upper Limit} - \text{Lower Limit}
]
How to Calculate Class Size
- Identify the upper limit of the class interval
- Identify the lower limit of the class interval
- Subtract the lower limit from the upper limit
Example Calculation
For a class interval with:
- Upper Limit: 20
- Lower Limit: 5
[
\text{Class Size} = 20 - 5 = 15
]
The class size is 15.
When to Use This Calculator
This calculator is useful for:
- Creating frequency distributions in statistics
- Organizing data into meaningful groups
- Analyzing categorical or continuous data
- Preparing data for histograms and graphs
- Understanding data spread and patterns