The Adjustable-Bands Z-Test (in Pro Real Time)

This should be an interesting article, suggesting a new way for studying the market, way that should to be investigated and analized: however this isn't appliable to Pro Real Time desk, since this provider (as many others) does not furnish statistical functions and tests.

http://www.traders.com/index.php/sac-magazine/current-contents/60-feature-articles/charting/797 

Any source