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CHAPTER3

Graphs

Graphs form the heart of any effective BI system. Whereas tables are optimized for the lookup of specific values, graphs convey a main idea about a data set. Graphs tell stories about data through the use of visual representations. They often highlight the relationship between different data sets and elements, compare results against predicted or anticipated values, reveal patterns and trends, or highlight a particular finding.

Choices abound with graph design, and default settings are seldom optimal. The decisions of which graph to use, how to specifically design a graph to convey a data insight in a consistent and accurate manner, ...

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