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Methodology - GHG emissions per capita

The average GHG emissions per capita in CO2-equivalent is 7.0 tonnes with a standard deviation of 6.8 tonnes. The higest value is 47.5 tonnes (Jamaica) and the lowest one is 0.3 tonnes (Burundi).


For countries above the mean the points for the score-bar are calculated as follows:

With the calculated mean and standard deviation an assumed normal distribution has been calculated. The probability of a value equals the minus-points, i.e. a probability of 67% equals 33 points (100 - 67).


For countries below the mean the points for the score-bar are calculated as follows:

As zero emissions reflects the absolute minimum this value should be 100 points. The average per capita emissions should equal 50 points. This means that for every 0.14 tonnes a minus-point is given. This method has been chosen as otherwise a country with no emissions would just get about 85 points when applying the assumed normal distribution method. This would not reflect the good performance of the country in that area.



United Nations:  last update June 2005


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