A limitation of stacked bar chars is that they:

Question

BlackTom AI · Accepted Answer

When evaluating the limitation of stacked bar charts, it helps to consider how the visual encoding affects interpretation.
Option 1: 'Can make it difficult to make relative comparisons between categories' This is a core drawback of stacked bars. Because the segments are stacked to show parts of a whole within each category, comparing the size of a particular category across different groups requires comparing non-aligned segments across bars, which can be visually tricky and less precise than comparing whole bars side-by-side. This aligns with the common limitation that stacks emphasize composition within a single category rather than direct cross-category magnitude.
Option 2: 'They take up more horizontal space than side-by-side bar charts' In many layouts, stacked bars actually save horizontal space because each category uses a single bar with segments, rather than multiple adjacent bars. Saying they take up more horizontal space is generally inaccurate and contradicts typical usage, so this claim is misleading.
Option 3: 'They cannot be used to display percentages' Stacked bars are frequently used to display percentages (for example, 100% stacked bars where each segment represents a proportion of the whole). Therefore, this statement is factually incorrect with respect to their typical application.
Option 4: 'Are overly simplistic compared to side-by-side bar charts' Stacked bars are not inherently more simplistic; in some cases they convey more nuance about composition, while in others they can be harder to read for precise comparisons. Claiming they are uniformly overly simplistic mischaracterizes their informational capacity and depends on context.

A limitation of stacked bar chars is that they:

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