What capability does stacking data series in a chart provide?

Stacking data series in a chart enhances the visualization by allowing multiple data series to be represented in a single structure. This capability is particularly beneficial for efficiently utilizing space within the chart, as it enables the representation of several metrics or categories within a defined area. By stacking, viewers can quickly grasp the overall trends and relationships between the different data series while minimizing the need for excessive space or separate charts.

Additionally, stacked charts often enhance readability by providing a clear comparative view of cumulative values. For instance, in a stacked bar chart, the total height of each bar represents the aggregate of all data series, while the segments illustrate individual contributions. This layered perspective facilitates quick comprehension, as users can easily discern both the total and the individual components, leading to clearer data interpretation without overwhelming the viewer with information.