Spurious correlation between ratios with a common divisor

✍ Scribed by Ji-Hyun Kim

• Book ID: 104303116
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 108 KB
• Volume: 44
• Category: Article
• ISSN: 0167-7152
• DOI: 10.1016/s0167-7152(99)00030-9

✦ Synopsis

One hundred years ago Karl Pearson derived an approximate formula for the correlation between ratios with a common divisor and cautioned to be wary of correlating ratios. The exact formula for the correlation between ratios is derived. It can provide a better reference point of no connection when correlating ratios with a common divisor.