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555-605 Level|   Graphs|      
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Sajjad1994
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The graph shows the growth from 1960 through 2008 of nuclear power Updated on: 10 Nov 2023, 23:20
Originally posted by Sajjad1994 on 03 Dec 2019, 05:07.
Last edited by BottomJee on 10 Nov 2023, 23:20, edited 3 times in total.
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Dropdown 1: Canada Dropdown 2: 1500
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35% (medium)

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75% (02:03) correct 25% (02:01) wrong based on 534 sessions

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The graph shows the growth from 1960 through 2008 of nuclear power production in four countries, measured in millions of tonnes of oil equivalent (toe) annually, according to the International Energy Agency.

Use the drop-down menus to complete each statement according to the information presented in the diagram.

1. The country with the highest standard deviation of nuclear power production during the period 1960 to 2008 is .

2. In the year 2000, Sweden’s total nuclear power production is equal to approximately percent of the total nuclear power production of the Netherlands.


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Dropdown 1: Canada Dropdown 2: 1500
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The graph shows the growth from 1960 through 2008 of nuclear power 03 Dec 2019, 05:35
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1) D, since for Canada we can see the majority of fluctuations in the graph.

2) Sweden in 2000 ~ 15 million ton
Netherlands in 2000 ~ 1 million ton

So thats roughly 1500%

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The graph shows the growth from 1960 through 2008 of nuclear power 11 Jan 2020, 07:49
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Easy one, indeed.

Answer to the 1st - D Canada, quite variations Y-o-Y.

Answer to the 2nd = 15/1*100 = 1500%
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The graph shows the growth from 1960 through 2008 of nuclear power 26 Oct 2020, 09:37
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1) The answer to first question has to be D, as the maximum amount of fluctuations visible in the graph belong to the data of Canada.
2) The answer to this question also has to be D, as the amount of production of Sweden in 2000 is 15 million(toe) and the amount of production of Netherlands is approximately around 1 million(toe) therefore, Sweden’s total nuclear power production is equal to approximately 1500 percent of the total nuclear power production of the Netherlands.
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The graph shows the growth from 1960 through 2008 of nuclear power 31 Mar 2021, 23:42
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Official Explanation

Statement 1: Canada. This problem asks for the country with the highest standard deviation for the given period (1960 to 2008). Standard deviation is a measure of the overall distance of the set from the mean value, or the “spread” of the numbers in the set.

Compare the four data sets. All four start at approximately the same level, but the Netherlands and Switzerland do not increase appreciably over the given timeframe, while the other two countries do. Those first two countries, then, do not have the largest spread from their mean value.

Next, Sweden and Canada start out at the same value of zero and then both grow in similar ways over the years. However, Canada is consistently higher than Sweden. In other words, the overall spread of the set of values for Canada is larger (from 0 to approximately 25, with a peak at approximately 28, while Sweden goes from 0 to approximately 17 with a peak at approximately 20.)

The Canadian data set, then, has a wider range than Sweden’s data set. Canada, therefore, has the larger standard deviation.

Statement 2: 1,500. To solve this problem, find the ratio of the values for the two countries and then multiply by 100 to turn that ratio into a percent. This is given by:

Percent = (Sweden in 2000)/(Netherlands in 2000) × 100

Find the approximate values of production for the Netherlands and Sweden in 2000. The Netherlands produced approximately 1 million toe of nuclear energy in 2000 and Sweden produced approximately 15 million toe of total nuclear energy in the same year. Plug these values into the formula above:

Percent = (15 million)/(1 million) × 100 = 15 × 100 = 1,500

Note: The answer 15 is a trap. If the question had asked something along the lines of “Sweden’s total nuclear power production is approximately _____ times the total nuclear power production of the Netherlands,” then 15 would have been the answer. Sweden’s production is 15 times, or 1,500 percent of, the Netherlands’ production.
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