To determine the best way to represent the given data, let's analyze the type of data and how we can best visualize it for accurate comparison and ease of understanding.
The data provided is categorical, as it lists different types of species and their respective percentages of being critically endangered and endangered or vulnerable. The data is structured in such a way that it is evident each type of species has a proportion that adds useful information to be compared.
1. Understanding the Data:
- Types of species: Plants, Invertebrates, Freshwater fish, Amphibians, Reptiles, Birds, Mammals.
- Two categories for each species: Critically endangered (%), Endangered or vulnerable (%).
2. Representation Options:
- Bar graph: A bar graph is effective for comparing the categories (species types) across two different conditions (Critically endangered and Endangered or vulnerable). It allows for easy visual comparison of the percentages within each species type, and also across all species.
- Pie chart: This type of chart is best for showing proportions of a whole and would not be helpful in comparing across different categories.
- Line graph: A line graph shows trends over a continuous range, typically time. This would be less useful here since our data is categorical rather than continuous.
- Scatter plot: A scatter plot is useful for showing the relationship between two variables. It’s not ideal for categorical data comparisons like this.
3. Conclusion:
The best type of graph for representing the given data, which includes different species and their respective percentages of critically endangered and endangered or vulnerable categories, is the bar graph. The bar graph will allow for clear comparison across categories and between the two conditions for each species type.
Therefore, the best choice is:
Bar graph
