Seems to me that both of those two alternative explanations can be
ruled out by the graph showing the water usage pattern from the
previous evening.
Sent from my iPhone
On May 1, 2010, at 11:16 PM, "Jim Clark" <[email protected]> wrote:
Hi
I saw this a few weeks ago ... great graph! It has been many years
so I cannot retrieve the appropriate terminology, but data appears
to have many properties of quasi-experimental designs a la Cook &
Campbell. So a number of causal conclusions appear likely (to
varying degrees), including: (1) Edmonton (Canadian, all, ...?)
hockey fans urinate at certain well defined intervals between
periods, and (2) Edmonton (Canadian, all, ...?) hockey fans like to
consume beer while watching hockey (this is the more speculative
part of the model, although not a stretch for anyone familiar with
Canadian hockey fans ... that would be the Bayesian part of the
"analysis").
Take care
Jim
James M. Clark
Professor of Psychology
204-786-9757
204-774-4134 Fax
[email protected]
"William Scott" <[email protected]> 01-May-10 7:13:44 PM >>>
I know others have contributed graphics from this source which is
highly recommended and here is another. The relationship between
water use in a large Canadian city and the Canadian Olympic hockey
finals. Water use includes drinking, watering the lawns and plants,
washing the cars, and of course, flushing the toilet. Of course,
this is only a correlation between television sports production and
behavior, but what kind of causation inferences are we going to make?
Bill Scott
http://flowingdata.com/wp-content/uploads/yapb_cache/flush_game.5va6dz765ugw8880gswc80w8o.bxj7bs82axw0g448owg4gc8so.th.png
Bill Scott
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