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___ are a powerful and compact way to visualize hierarchical and part-to-whole relationships

44. ___ are a powerful and compact way to visualize hierarchical and part-to-whole relationships.

1. Histogram
2. Treemaps
3. Bar charts
4. None of the mentioned above

Answer: B) Treemaps

Explanation:

Treemaps are a great technique to represent hierarchical and part-to-whole relationships in a small space. Each tree branch is shown as a rectangle, with the size of each branch proportional to a defined data metric. Many people prefer treemaps because they're visually appealing, so knowing how to use colour is advantageous. In a treemap, colour is frequently used to indicate dimensions; heat maps are useful for displaying a spectrum.