What is a common format used to organize and display numerical information clearly?

A table is an effective format for organizing and displaying numerical information clearly because it allows for a structured presentation of data in rows and columns. This layout helps to categorize information systematically, making it easier for readers to compare values and identify patterns or trends within the data. Tables can also include headings that describe the content of each column, further enhancing clarity and understanding.

While diagrams can illustrate concepts visually, they may not convey numerical data as effectively as a table. Spreadsheets do offer extensive capabilities for organizing numerical data and performing calculations; however, they primarily serve as software tools rather than a standalone format. Outlines are useful for organizing ideas or concepts hierarchically but do not specifically cater to numerical data presentation. Thus, a table stands out as the most appropriate choice for displaying numerical information clearly.