What kind of display would be the best way to represent the data below?

\begin{tabular}{|l|c|c|}
\hline Type of species & Critically endangered (\%) & Endangered or vulnerable (\%) \\
\hline Plants & 13 & 70 \\
\hline Invertebrates & 0 & 35 \\
\hline Freshwater fish & 9 & 37 \\
\hline Amphibians & 7 & 30 \\
\hline Reptiles & 5 & 28 \\
\hline Birds & 0 & 12 \\
\hline Mammals & 2 & 21 \\
\hline
\end{tabular}

A. Bar graph
B. Pie chart
C. Line graph
D. Scatter plot



Answer :

To determine the best way to visually represent the given data on species endangerment, let's review each type of display option:

1. Bar Graph: A bar graph would clearly show the percentage of each species type that is critically endangered and endangered or vulnerable. You can use two bars for each species type, one for the critically endangered percentage and one for the endangered or vulnerable percentage, making it easy to compare these categories across different species.

2. Pie Chart: A pie chart is useful for showing a proportional relationship within a single category. However, it is less effective when you need to compare multiple categories or show different aspects (critically endangered vs. endangered or vulnerable) of the data simultaneously.

3. Line Graph: A line graph is typically used to show trends over time or continuous data. Since this dataset categorizes species without any indication of sequential or continuous change, a line graph would not be appropriate.

4. Scatter Plot: A scatter plot is used to show the relationship between two continuous variables. In this case, the data is categorical (types of species and their percentages), so a scatter plot would not be suitable.

Given these considerations, the bar graph is the best option. It will allow you to clearly compare the percentages of critically endangered and endangered or vulnerable species across different types of species.

Thus, a bar graph should be used to represent the data effectively.

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