Q. 28 - Elementary Statistics

Question

Clean Fossil Fuels, In the article, "Squeaky Clean Fossil Further benefits of using clean fossil fuels that release no carbon dioxide $\left({\mathrm{CO}}_2\right)$, helping to reduce the threat of global warming. One technique of slowing down global warming caused by ${\mathrm{CO}}_2$ is to bury the ${\mathrm{CO}}_2$ underground in old oil or gas wells, coal mines, or porous rocks filled with saltwater. Global estimates are that 11,000 billion tonnes of ${\mathrm{CO}}_2$could be disposed of underground, several times more than the likely -missions of ${\mathrm{CO}}_2$ from burning fossil fuels in the coming century. This could give the world extra time to give up its reliance on fossil fuels. The following bar chart shows the distribution of space available to bury ${\mathrm{CO}}_2$ gas underground.

al. Explain why the break is found in the third bar.

b. Why was the graph constructed with a broken bar?

Step-by-Step Solution

Answer

a) The data given is discontinuous for the bar graph.

b) There is no data available for the period shown by the broken part. 

Part (a) Step 1: Given Information

To determine why there is a break in the third bar.

Part (a) Step 2: Explanation

The data is given as: 

In a dot plot, a dot is placed above the relevant number on the number line for each piece of data.

For the bar graph, the data is discontinuous.

Part (b) Step 1: Given Information

To determine why the graph is constructed with a broken bar.

Part (b) Step 2: Explanation

The data is given as: 

The number of data values that fall into a class is known as frequency.

There is no information available for the time period indicated by the broken portion.

As a result, the graph is made up of fractured bars.