Given a collection of two data sets: a list of intersection locations and associated “number of accidents.” Which representation is most efficient for communicating the comparative danger of the set of intersections?
One possible representation that is efficient for communicating the comparative danger of the set of intersections is a bar chart or histogram.
By plotting the number of accidents on the y-axis and the intersection locations on the x-axis, a bar chart can visually depict the comparative danger of each intersection. The height of each bar represents the number of accidents, allowing for a quick and intuitive comparison between intersections.
This representation is efficient because it conveys the information in a concise and straightforward manner. It allows viewers to identify the intersections with the highest number of accidents at a glance, facilitating the understanding of the comparative danger. Additionally, it can be easily understood by a wide range of audiences, regardless of their familiarity with data analysis techniques.
Other representations like pie charts or scatter plots could also be used, but a bar chart or histogram is especially well-suited for comparing data points in terms of magnitude, making it effective for communicating the relative danger of intersections based on the number of accidents.