Creating a visual histogram from a set of numerical data is maybe the most comprehensive way for truly understanding its nature.
Every major statistical software, including Excel, offers a histogram view of the data but it is usually a static and certainly not a very appealing one, limiting the depth of the analysis.
Website: http://www.excel-premiumutilities.com
Download: HistogramPlus-S.exe
Password: shareware898987-metrics-unregistered