flotr2 is an open source library for building HTML5 graphs and charts. Flotr 2 - as it became an offshoot from Flotr, but without binding to Prototype JS and with many improvements.
Benefits:
support for mobile devices;
framework-independent;
extensibility with plugins;
custom chart types;
Browser support at the level of FF, Chrome, IE6 + , Android, iOS
supports lines, bars, candles, pies, bubbles.
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You can customize headings, subtitles, colors and more for each variable. I hope that this library will help in the visualization of statistical information in your projects.