Which graphical representation is used to show an algorithm?

A flowchart is the graphical representation commonly used to illustrate an algorithm. It uses standardized symbols such as ovals, rectangles, diamonds, and arrows to depict the steps and the flow of control within the algorithm. Each shape serves a specific purpose: ovals represent start and end points, rectangles denote processes or actions, diamonds indicate decision points, and arrows illustrate the direction of flow. This visual format helps in understanding the logic of the algorithm, making it easier to follow the sequence of operations and decisions.

Other graphical representations like bar graphs and pie charts are primarily used for displaying statistical data and comparing quantities in a visual format. They are not suitable for outlining procedural steps or decision-making processes inherent in algorithms. A data table, meanwhile, organizes information in rows and columns but does not provide a flow or sequence to the process, which is essential when describing how an algorithm operates. Thus, flowcharts are the most effective tool for this purpose in programming and computer science.