What does the term 'class interval' refer to in a histogram?

The term 'class interval' in a histogram refers specifically to the ranges of values that the data is divided into for the purpose of creating the histogram. Each class interval represents a certain range of data and corresponds to the width of the bars in the histogram. This range is crucial because it helps organize continuous data into distinct sections, making it easier to analyze and visualize the distribution of the data.

In a histogram, the widths of the bars reflect these class intervals. If the bars have different widths, it can indicate different ranges of data, which may complicate the interpretation of the histogram. Each bar's frequency corresponds to the number of observations within that specific interval, thereby allowing for a clear comparison of how many data points fit into each range.

Overall, understanding class intervals is fundamental in data representation with histograms, as they help aggregate data into manageable sections for analysis.