What does a Cumulative Frequency Distribution summarize?

A Cumulative Frequency Distribution is a statistical tool that summarizes the count of data items that fall below each class interval or limit. This distribution provides insight into how data accumulates across defined intervals, allowing for an understanding of how many observations are less than or equal to a certain value.

By tracking the cumulative counts, one can easily see trends in the data and determine things like percentiles or assess how values are distributed across different ranges. This helps in understanding the distribution of data points, identifying concentrations of values, and analyzing the overall behavior of the dataset.

This context illustrates why the choice regarding the count of data values below each class limit is the correct answer, as it directly aligns with the purpose and function of a cumulative frequency distribution.