Questions answered in this chapter:
How can you graphically summarize daily customer counts for each of a bank’s branches in a single cell?
How can you modify sparklines?
How can you summarize an NFL team’s sequence of wins or losses in a single cell?
Do sparklines automatically update when new data is included?
Sparklines are exciting graphics that can summarize a row or column of data in a single cell. The term sparkline was first used by Edward Tufte, a famous expert on the visual presentation of data and its analysis. Tufte described sparklines as “data-intense, design-simple, word-sized graphics.” Microsoft Excel 2010 makes it a snap to create amazing graphics that reside in a single cell.