The graph used to show data on nominal scale is

Nominal data sorts cases into named groups without order such as gender club membership or transport type. A pie graph shows proportions of the whole in a simple visual and works well when categories are few and distinct. For many categories a bar chart may be clearer yet the pie still communicates share of each group at a glance. When presenting to community stakeholders simple visuals beat complex tables. Always label segments include a clear title and avoid overload. For accessibility provide numeric values next to slices and offer a text summary so all audiences can understand results.