What is Strong Correlation?


Authors: 
Marcin Kozak
Volume: 
31(3)
Pages: 
Online
Year: 
2009
Publisher: 
Teaching Statistics
URL: 
http://www3.interscience.wiley.com/journal/122544460/abstract
Abstract: 

Interpretation of correlation is often based on rules of thumb in which some boundary values are given to help decide whether correlation is non-important, weak, strong or very strong. This article shows that such rules of thumb may do more harm than good, and instead of supporting interpretation of correlation - which is their aim - they teach a schematic approach to statistics. Therefore they should be avoided in a statistics course.