2.31 More on CO2 emissions The Energy Information Agency reported the CO2 emissions (measured in gigatons, Gt)

from fossil fuel combustion for the top 10 emitting countries in 2011. These are China (8 Gt), the United States

(5.3 Gt), India (1.8 Gt), Russia (1.7 Gt), Japan (1.2 Gt), Germany (0.8 Gt), Korea (0.6 Gt), Canada(0.5 Gt), Iran

(0.4 Gt), and Saudi Arabia (0.4 Gt).

a. Find the mean and median CO2 emission.

b. The totals reported here do not take into account a nation’s population size. Explain why it may be more sensible to analyze per capita values, as was done in Example 11.