R-Squared Correlation Coeficient (RSQUARED)

Interpretation / Algorithm
R-Squared with Metastock screenshot [paritech.com]
Description with math formula [FMLabs.com]
Technical Analysis Studies [prophet.net]

Product Implementation	Function / Formula / Script / Source Code
Genius Trader [geniustrader.org]	PERL Script - GT::Indicators::RSquare [geniustrader.org]