Burning fuels in power plants and motor vehicles emits carbon dioxide (CO2) , which contributes to global warming. The CO2 emissions (metric tons per capita) for countries varies from 0.04 in Burundi to 43.86 in Qatar. The data set, which contains information on 203 countries, is too large to display, but here are the data for the first 5 countries. Find the mean, ⎯⎯⎯, and the median, , for the full data set. Give your answers to three decimal places.

The mean of a data set refers to the average of the data distribution which is achieved by the sum of all the data set divided by the number of values in the data set.

The median refers to the middle value when being ranked from the highest to the lowest.

The missing data for the first 5 countries are as follows:

Country CO2 emission (metric tons per capita)

Aruba 8.41

Afghanistan 0.29

Angola 1.29

Albania 1.98

Andorra 5.83

The mean of the data set is computed as:

[tex]\mathbf{Mean \ \bar {x} = \dfrac{8.41+0.29+1.29+1.98+5.83}{5}}[/tex]

[tex]\mathbf{Mean \ \bar {x} =3.560}[/tex]

To determine the median of the data set, we first rearrange the data set from the highest to the lowest:

= 8.41, 5.83, 1.98, 1.29, 0.29

The median value is 1.98

Learn more about the Mean and Median of a data set here:

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