Question

Burning fuels in power plants or motor vehicles emits carbon dioxide (CO2), which contributes to global warming. The table below displays CO2 emissions per person from countries with populations of at least 20 million. COUNTRY Co2 COUNTRY CO2 COUNTRY Co2 Algeria Argentina Australia Bangladesh Brazil Canada China Colombia Congo Egypt Ethiopia France Germany Ghana India Indonesia 2.6 3.6 18.4 0.3 6.0 2.9 Poland Romania Russia Saudi Arabia South Africa Iran Iraq Italy Japan Kenya Korea, North Korea, South Malaysia Mexico Morocco Myanmar Nepal Nigeria Pakistan 4.2 10.8 13.8 7.0 9.5 0.3 17.0 3.9 1.3 0.2 2.0 in 0.3 0.1 9.3 Sudan Tanzania Thailand 3.7 1.4 Turkey 0.2 0.1 0.4 0.8 Ukraine United Kingdom United States Uzbekistan Venezuela Vietnam 6.3 8.8 19.6 4.2 5.4 6.2 9.9 0.3 eru Philippines 0.9

a) Why do you think we choose to measure emissions per person rather than total CO2 emissions for each country?

b) Make a stemplot to display the data.

c) Describe shape, center, spread of the distribution

d) Use the 1.5xIQR rule to determine the possible outliers. List the outliers. Show all work.

e) No visually, using the stemplot you created, what are the additional outlier(s)? Discusses why you chose these outlier(s)

f) In this case, is it better to use the 1.5x IQR Rule, or to visually look at the data to select outliers?

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