Finding the Lower Class Limit
In statistics, a frequency distribution is a table or graph that summarizes the distribution of data by classes or intervals. Each class has an upper class limit and a lower class limit.
Understanding Class Limits
The lower class limit is the smallest value that can be in a class interval. It is typically found by subtracting 0.5 from the lower endpoint of the interval.
For example, if a class interval is [10, 20), the lower class limit is 10 – 0.5 = 9.5.
The upper class limit is the largest value that can be in a class interval. It is typically found by adding 0.5 to the upper endpoint of the interval.
For example, if a class interval is [10, 20), the upper class limit is 20 + 0.5 = 20.5.
Finding the Lower Class Limit
- Identify the lower endpoint of the class interval.
- Subtract 0.5 from the lower endpoint.
For example, to find the lower class limit of the interval [10, 20), we would do the following:
1. Identify the lower endpoint: 10
2. Subtract 0.5: 10 – 0.5 = 9.5
Therefore, the lower class limit of the interval [10, 20) is 9.5.
Conclusion
Finding the lower class limit is a straightforward process that can be done in a few simple steps. By following the instructions outlined above, you can easily calculate the lower class limit for any given class interval.
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