In a Cumulative Frequency Distribution, what does the upper class limit refer to?

In a Cumulative Frequency Distribution, the upper class limit specifically pertains to the maximum value that is included in each class interval. Each class interval is defined by its range, and the upper class limit represents the highest value that can fall within that interval. For example, if a class interval is defined as "10 to 20," the upper class limit is 20, meaning all values up to that point are accounted for in that class before moving to the next interval.

This concept is essential for understanding how cumulative frequencies are calculated, as each class interval builds upon the previous ones, providing a running total of frequencies up to that point. Therefore, recognizing what the upper class limit signifies is critical for accurately interpreting cumulative frequency distributions and analyzing the distribution of data within defined intervals.