To communicate the comparative danger of a set of intersections based on the number of accidents, the most efficient representation would be:
B. Point Plot
A point plot (or scatter plot) allows you to visually compare the number of accidents at each intersection effectively. Each point can represent an intersection, and the position on the y-axis can indicate the number of accidents. This type of visualization makes it easy to identify patterns, outliers, and trends across different intersections.
While a table provides precise numbers, it doesn't communicate the comparative danger as clearly as a visual representation. Pie charts are generally not suitable for comparing individual categories when there are multiple intersections. Formulas do not provide a visual, intuitive summary for quick comparison.
Overall, a point plot would be most effective for communicating the desired information.