10. (1.36) Burning fuels in power plants or motor vehicles emits carbon dioxide

Question

10. (1.36) Burning fuels in power plants or motor vehicles emits carbon dioxide (CO2), which contributes to global warming. The table below displays 2010 CO2 emissions per person from countries with populations of at least 30 million in that year T A BLE 1.6 ANNUAL CARBON DIOXIDE EMISSIONS IN 2010 (METRIC TONS PER PERSON) COUNTRY COUNTRY COUNTRY CO CO CO 1.8032 Algeria 3.3315 Indonesia Poland 8.3086 4.4710 Iran Argentina 7.6765 Russia 12.2255 0.3716 Bangladesh Iraq 3.7034 South Africa 9.2041 6.7177 Spain 2.1503 Brazil Italy 5.8535 0.3109 9.1857 14.6261 Canada Japan Sudan China 6. 1949 Kenya 0.3038 0.1522 Tanzania Korea, South 11.4869 Colombia 1.6295 Thailand 4.4469 3.7636 4.1310 0.4932 Egypt 2.6228 Morocco 1.5994 Uganda 0.1113 Ethiopia 0.0746 Myanmar 0.1732 Ukraine 66449 0.4941 7.9251 France 5.5554 Nigeria United Kingdom Pakistan 0.9321 United States 9.1148 17.5642 Germany 0.8731 1.6662 India Philippines Vietnam 1.7281 Data Set eBook

Explanation / Answer

Step 1
Answer-4th option

Emissions are measured per person because it allows us to compare between countries with different populations.

Option 1 is wrong because we do not have information about number of cars per person
Option 2 is wrong because we do not have information about deforestation per person
Option 3 is wrong because we do not have information about conversion of fossil fuels per person

Step 3
Answer-1st option

The shape of the distribution is skewed to the right since a majority of the countries have emission of less than 3 metric tons per person. Very few countries have emissions of more than 10 metric tons per person. Rest of the countries are in between.

Step 4.
Answer-1st option

In the stemplot (also called stem and leaves), the 20th entry has the value of 3.7 (for Iraq)
It is the midpoint if the values are arranged in ascending order.

Step 5
Answer-4th option

Spread of the distribution is the range consisting of minimum and maximum value. here it is less that 0.1 to 17.5

Step 6

1-Outlier, 2-Not an outlier
A country is an outlier if it has value at the periphery of the range where it is not skewed

Answer

1-United States (17.56)
2-Congo (0.49)
1-South Korea (11.48)
1-Canada (14.62)
2-Mexico (3.76)
1-Russia (12.22)
2-Thailand (4.44)
2-Germany (9.11)

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