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Alison, This should help plus there references therein. It includes a nice data set and graph. Spurious Correlation and the Fallacy of the Ratio Standard Revisited Author(s): Richard A. KronmalSource: Journal of the Royal Statistical Society. Series A (Statistics in Society), Vol. 156, No. 3(1993), pp. 379-392Published by: Blackwell Publishing for the Royal Statistical SocietyStable URL: http://www.jstor.org/stable/2983064Accessed: 26/10/2010 11:49 Cheers, Nigel On 10/26/2010 10:48 AM, Macfarlane, Alison wrote: > > There various datasets around showing correlations between numbers of > storks and numbers of births, although differences in changes over > time. Usually they are described as having been observed in Sweden. I > seem to remember one set in a Genstat manual. I have been asked about > an unreferenced set I used in an article in abput 1980, although I > think it was later. I have been using a version recently to teach > abput the Bradfprd Hill criteria. > > Does anyone have any referenced source of such data? > > Alison > > Alison Macfarlane > Department of Midwifery > City University London > Philpot Street, London E1 2EA > Phone (0) (44) 207 040 5832 > Fax (0) (44) 207 040 5811 > Email [log in to unmask] <mailto:[log in to unmask]> > www.city.ac.uk <http://www.city.ac.uk/> > This email and its contents are the property of City University > London. If you are not the intended recipient of this message and any > attached files, please delete it. Unauthorised copying or distribution > of this message, its attachments or parts thereof, is strictly > prohibited unless specifically stated otherwise. > > Please consider the environment before printing my email > > ****************************************************** Please note > that if you press the 'Reply' button your message will go only to the > sender of this message. If you want to reply to the whole list, use > your mailer's 'Reply-to-All' button to send your message automatically > to [log in to unmask] Disclaimer: The messages sent to this list > are the views of the sender and cannot be assumed to be representative > of the range of views held by subscribers to the Radical Statistics > Group. To find out more about Radical Statistics and its aims and > activities and read current and past issues of our newsletter you are > invited to visit our web site www.radstats.org.uk. > ******************************************************* ****************************************************** Please note that if you press the 'Reply' button your message will go only to the sender of this message. If you want to reply to the whole list, use your mailer's 'Reply-to-All' button to send your message automatically to [log in to unmask] Disclaimer: The messages sent to this list are the views of the sender and cannot be assumed to be representative of the range of views held by subscribers to the Radical Statistics Group. To find out more about Radical Statistics and its aims and activities and read current and past issues of our newsletter you are invited to visit our web site www.radstats.org.uk. *******************************************************