Mudcat Café Message

sj

User Name	Thread Name	Subject	Posted
GUEST,KP	BS: Where's the Global Warming (1541* d)	RE: BS: Where's the Global Warming	18 Mar 10
Sorry Sawzaw, Hate to be pedantic but your graph shows the ice is 2 standard deviations away from the average not 2%. That means that there is a 95% probability that the ice cover is below the average. See here for an explanation of the stats: 68-95-99.7 rule You hear people using phrases like 'the change is statistically significant' and they are usually implying that the new data is more than 2 deviations away from the mean. It looks like we might be in a situation at the moment where sea temperature is rising but the air temperature doesn't seem to be. That's a pain for the experimentalists as trying to get good average sea temperature data is really hard by all accounts!

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