On Apr 6, 11:31*pm, "BobLl" wrote:


However, I'm happy to accept your statistical argument that it cannot be
determined whether the global temperature has been warming or cooling for
the last 10 years. * Make sure to tell the politicians.

like so?
"The World Meteorological Organization (WMO) requires the calculation
of averages for consecutive periods of 30 years, with the latest
covering the 1961-1990 period. However, many WMO members, including
the UK, update their averages at the completion of each decade. Thirty
years was chosen as a period long enough to eliminate year-to-year
variations." http://www.metoffice.gov.uk/climate/uk/averages/