Thanks to Sam Radakovitz, a Program Manager on the Excel team, for putting together this series on Sparklines. For Excel 2010 we’ve implemented sparklines, “intense, simple, word-sized graphics” , as their inventor Edward Tufte describes them in his book Beautiful Evidence . Sparklines help bring meaning and context to numbers being reported and, unlike a chart, are meant to be embedded into what they are describing: In the above example, the sales number alone gives you a single moment in...