Most business intelligence products I've worked with do really simplistic graphing, decorated with a lot of useless chart junk. I often find myself pulling numbers and feeding them into Excel for better manipulation and graphing. Your typical BI tool can't automatically handle some incredibly useful charts which I learned years ago in Total Quality Management training and find myself reusing every year.
One of these is Shewhart control charts. Also Pac-Man, but that comes later.
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