What kind of display would be the best way to represent the data? Type of species Critically endangered open paren percent close paren Endangered or vulnerable open paren percent close paren Plants 13 70 Invertebrates 0 35 Freshwater fish 9 37 Amphibians 7 30 Reptiles 5 28 Birds 0 12 Mammals 2 21

A bar graph is best for comparing two numerical percentages across several categories of species. You could place the species types on one axis and show separate bars for the critically endangered and endangered-or-vulnerable percentages. A pie chart shows parts of one whole, while a line graph is usually used to show change over time.

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