on the relationship between number of licenses for radios and the number
of people classified as 'mental defectives' in England and Wales from 1924-37
Of course, both were increasing over time, the latter due to increase in diagnosis
using this term, the former due to increased availability, accounting for the very
high correlation. I've attached the data as a SAS file.
Subject: [R] correlation and causality examples From: Jean lobry <[EMAIL PROTECTED]> Date: Sat, 15 Nov 2003 15:49:29 +0100 To: [EMAIL PROTECTED]
Dear All,
I'am looking for examples showing that correlation does not imply causality, the targeted audience consists of undergraduate students (their first year at the university but in the BioMathStat track). All practicals are under R.
--
Michael Friendly Email: [EMAIL PROTECTED] Professor, Psychology Dept.
York University Voice: 416 736-5115 x66249 Fax: 416 736-5814
4700 Keele Street http://www.math.yorku.ca/SCS/friendly.html
Toronto, ONT M3J 1P3 CANADA
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