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Norway has the highest total number of electric cars among all the countries in the table shown.: False
The median number of electric cars per 1,000 residents among all countries shown is 8.5.: True
Netherlands has approximately 1.8 million electric cars in the country.: False
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
72% (02:28) correct
28%
(02:15)
wrong
based on 920
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The table below shows the number of electric cars owned per 1,000 residents in various countries. The table also provides the approximate population of each country (in millions).
For each of the following statements, select True if the statement can be verified as true based on the information provided. Otherwise, select False.
| Country | Electric Cars per 1,000 Residents | Population (in Millions) |
|---|---|---|
| Norway | 81 | 5.5 |
| Iceland | 37 | 0.4 |
| Sweden | 20 | 10 |
| Netherlands | 10 | 18 |
| Germany | 8.5 | 85 |
| United Kingdom | 6.5 | 70 |
| France | 6.5 | 70 |
| China | 3 | 1,400 |
| South Korea | 3 | 50 |
For each of the following statements, select True if the statement can be verified as true based on the information provided. Otherwise, select False.
OFFICIAL ANSWER:
For each of the statements, all we need to do is find if any other data point contradicts what is being said.
A: Norway has the highest number of electric cars among all the countries in the dataset
The number of electric cars in any country = Electric Cars/ 1000 residents * Population (in Millions)
However, notice that while Norway has the highest number of electric cars/ population, the population of the country is much lower than others in the dataset.
Fast/Quick Way to Solve (no calculations): As this is a Highest Yes/No question, and all we have to potentially to answer it is find a way to disprove it and once there is a single "No", we have our answer. Looking at China can be attractive but there is some math. Instead, look at Germany. It has about 1/10th of the Norway's electric car density (8.5 vs. 81) so for this question to hold, and for Norway to have more cars, Norway needs to have more than 10% of Germany's population. However, it is 5.5 vs. 85. Germany's population is way higher than 10x of Norway, so Germany will have more electric cars than Norway. This is fast and reliable enough to answer that No, Norway does not have the most electric cars. However, a more precise and certain way is available as well.
Precise and Methodical Way:
Calculate the number of cards in Norway. For Norway, this number is 81/ 1000 * 5.5 million
Or simply, 81 * 5.5 thousands or 445,000 electric cars.
For Germany, it would be 8.5 / 1000 * 85 million = 8.5 * 85,000 = 722,500 electric cars.
This is sufficient for us to say that No, Norway does not have the most electric cars.
Another country that may catch your attention is China:
The number of electric cars in China = 3/ 1000 * 1400 mil
Or, 3 * 1,400 thousands, which we can already tell is greater than 440 buit calculating it out, it is 4.2 million cars or 10x of Norway.
Therefore, Statement A is false.
B: The median of the data in the population column is 50 million
This is fairly straighforward but you need to know the Median. The median is defined as the middle number (or average of 2 middle numbers if there is an even number of members) from a list of elements that has been sorted in ascending order. Using the table header, sort the data in the table by ascending order and South Korea is ranked 5 in the list of 9 countries. Hence this statement is True.
C: Netherlands has approximately 1.8 million electric cars in the country
No. of electric cars in the Netherlands = 10 / 1000 residents
Population = 18 mil
Therefore, no. of electric cars = 10 /1000 * 18 mil
Or, 10 * 18 thousands = 180,000.
You could also quickly see that with the density of 10/1000 which is 1/100, and population of 18 million, the 1.8 million number is too high. No calculations really necessary.
This statement is false.
For each of the statements, all we need to do is find if any other data point contradicts what is being said.
A: Norway has the highest number of electric cars among all the countries in the dataset
The number of electric cars in any country = Electric Cars/ 1000 residents * Population (in Millions)
However, notice that while Norway has the highest number of electric cars/ population, the population of the country is much lower than others in the dataset.
Fast/Quick Way to Solve (no calculations): As this is a Highest Yes/No question, and all we have to potentially to answer it is find a way to disprove it and once there is a single "No", we have our answer. Looking at China can be attractive but there is some math. Instead, look at Germany. It has about 1/10th of the Norway's electric car density (8.5 vs. 81) so for this question to hold, and for Norway to have more cars, Norway needs to have more than 10% of Germany's population. However, it is 5.5 vs. 85. Germany's population is way higher than 10x of Norway, so Germany will have more electric cars than Norway. This is fast and reliable enough to answer that No, Norway does not have the most electric cars. However, a more precise and certain way is available as well.
Precise and Methodical Way:
Calculate the number of cards in Norway. For Norway, this number is 81/ 1000 * 5.5 million
Or simply, 81 * 5.5 thousands or 445,000 electric cars.
For Germany, it would be 8.5 / 1000 * 85 million = 8.5 * 85,000 = 722,500 electric cars.
This is sufficient for us to say that No, Norway does not have the most electric cars.
Another country that may catch your attention is China:
The number of electric cars in China = 3/ 1000 * 1400 mil
Or, 3 * 1,400 thousands, which we can already tell is greater than 440 buit calculating it out, it is 4.2 million cars or 10x of Norway.
Therefore, Statement A is false.
B: The median of the data in the population column is 50 million
This is fairly straighforward but you need to know the Median. The median is defined as the middle number (or average of 2 middle numbers if there is an even number of members) from a list of elements that has been sorted in ascending order. Using the table header, sort the data in the table by ascending order and South Korea is ranked 5 in the list of 9 countries. Hence this statement is True.
C: Netherlands has approximately 1.8 million electric cars in the country
No. of electric cars in the Netherlands = 10 / 1000 residents
Population = 18 mil
Therefore, no. of electric cars = 10 /1000 * 18 mil
Or, 10 * 18 thousands = 180,000.
You could also quickly see that with the density of 10/1000 which is 1/100, and population of 18 million, the 1.8 million number is too high. No calculations really necessary.
This statement is false.
| True | False | |
| Norway has the highest total number of electric cars among all the countries in the table shown. | ||
| The median number of electric cars per 1,000 residents among all countries shown is 8.5. | ||
| Netherlands has approximately 1.8 million electric cars in the country. |
ShowHide Answer
Official Answer
Norway has the highest total number of electric cars among all the countries in the table shown.: False
The median number of electric cars per 1,000 residents among all countries shown is 8.5.: True
Netherlands has approximately 1.8 million electric cars in the country.: False
10 Apr 2025, 06:00
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Official Solution:
Norway has the highest total number of electric cars among all the countries in the dataset.
• We are asked about the total number of electric cars, not the number per 1,000 residents. While Norway has the highest number per 1,000 residents (81), its population is very small (5.5 million).
China has only 3 electric cars per 1,000 residents — which is 27 times lower than Norway's 81. However, China's population is 1,400 million, which is more than 250 times that of Norway. This large population more than compensates for the lower per-1,000 figure.
Therefore, Norway does not have the highest total number of electric cars. The statement is False.
The median number of electric cars per 1,000 residents among all countries shown is 8.5.
• To find the median, we sort the values for electric cars per 1,000 residents in ascending order: 3, 3, 6.5, 6.5, 8.5, 10, 20, 37, 81. There are 9 values, so the median is the 5th value. The 5th value is 8.5. Therefore, the statement is True.
Netherlands has approximately 1.8 million electric cars in the country.
• The Netherlands has 10 electric cars per 1,000 residents and a population of 18 million. Total number of electric cars = 10 * (18 million / 1,000) = 10 * 18,000 = 180,000 cars. The statement says 1.8 million cars, which is 10 times higher. Therefore, the statement is False.
Correct answer:
Norway has the highest total number of electric cars among all the countries in the table shown. "False"
The median number of electric cars per 1,000 residents among all countries shown is 8.5. "True"
Netherlands has approximately 1.8 million electric cars in the country. "False"
Bunuel
Norway has the highest total number of electric cars among all the countries in the dataset.
• We are asked about the total number of electric cars, not the number per 1,000 residents. While Norway has the highest number per 1,000 residents (81), its population is very small (5.5 million).
China has only 3 electric cars per 1,000 residents — which is 27 times lower than Norway's 81. However, China's population is 1,400 million, which is more than 250 times that of Norway. This large population more than compensates for the lower per-1,000 figure.
Therefore, Norway does not have the highest total number of electric cars. The statement is False.
The median number of electric cars per 1,000 residents among all countries shown is 8.5.
• To find the median, we sort the values for electric cars per 1,000 residents in ascending order: 3, 3, 6.5, 6.5, 8.5, 10, 20, 37, 81. There are 9 values, so the median is the 5th value. The 5th value is 8.5. Therefore, the statement is True.
Netherlands has approximately 1.8 million electric cars in the country.
• The Netherlands has 10 electric cars per 1,000 residents and a population of 18 million. Total number of electric cars = 10 * (18 million / 1,000) = 10 * 18,000 = 180,000 cars. The statement says 1.8 million cars, which is 10 times higher. Therefore, the statement is False.
Correct answer:
Norway has the highest total number of electric cars among all the countries in the table shown. "False"
The median number of electric cars per 1,000 residents among all countries shown is 8.5. "True"
Netherlands has approximately 1.8 million electric cars in the country. "False"
14 Apr 2025, 20:32
Kudos
Bookmarks
1. The question asks us to figure out whether the following statements can be verified by the information in the table.
2. Norway has the highest total number of electric cars among all the countries in the table shown. While Norway does have the largest ratio, we are instead interested in the total number of electric cars in the country, which can be approximated by multiplying the ratio by the population. Norway would then have about \(\frac{81}{1000} * 5500000 = 445500\) electric cars, however, a country like China has about \(\frac{3}{1000} * 1400000000 = 4200000\) electric cars. 445500 < 4200000. So, this statement is false.
3. The median number of electric cars per 1,000 residents among all countries shown is 8.5. The median would be the 5th ranked, which is Germany, that does in fact have a ratio of 8.5. So, this statement is true.
4. Netherlands has approximately 1.8 million electric cars in the country. The total number of electric cars in the country can be approximated by multiplying the ratio by the population. Netherlands would then have about \(\frac{10}{1000} * 18000000 = 180000\) electric cars. 180000 < 1.8 million. So, this statement is false.
2. Norway has the highest total number of electric cars among all the countries in the table shown. While Norway does have the largest ratio, we are instead interested in the total number of electric cars in the country, which can be approximated by multiplying the ratio by the population. Norway would then have about \(\frac{81}{1000} * 5500000 = 445500\) electric cars, however, a country like China has about \(\frac{3}{1000} * 1400000000 = 4200000\) electric cars. 445500 < 4200000. So, this statement is false.
3. The median number of electric cars per 1,000 residents among all countries shown is 8.5. The median would be the 5th ranked, which is Germany, that does in fact have a ratio of 8.5. So, this statement is true.
4. Netherlands has approximately 1.8 million electric cars in the country. The total number of electric cars in the country can be approximated by multiplying the ratio by the population. Netherlands would then have about \(\frac{10}{1000} * 18000000 = 180000\) electric cars. 180000 < 1.8 million. So, this statement is false.
