Which type of presentational aid is most likely to be used to illustrate statistical data?

Charts are specifically designed to present numerical data clearly and effectively, making them the ideal presentational aid for illustrating statistical information. They allow for a visual representation of complex data sets, enabling the audience to grasp trends, comparisons, and relationships at a glance. Charts can encompass various formats such as bar graphs, line graphs, pie charts, and more, each serving a distinct purpose depending on the type of data being illustrated.

Using charts, a speaker can simplify intricate statistics and make them more accessible, ensuring that the audience can follow along and understand the key messages being conveyed. While other options like photos, props, and infographics can enhance a presentation, they do not focus as explicitly on displaying statistical data in a structured and easily interpretable manner. Hence, charts stand out as the most effective choice for illustrating statistical information in presentations.