Letter 12063

Correlation coefficient 

I am going to do some tests with the ASTM D5894 cyclic salt spray/QUV test. There is a correlation coefficient of 0.699 with real life defined. How does this coefficient work?

Matias Kerkhofs
- Leuven, Belgium

Sounds to me like it works through precision without accuracy Ý:-)

 
Ted Mooney, P.E.
finishing.com Inc. - Brick, NJ

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