67 Kellogg Insight Take, for instance, the connected scatterplot—a technique whose effectiveness Franconeri has researched . It takes a style of graph that is familiar to most of us—a simple scatterplot displaying two different trends—and merges the two trends into a single visualization, as in the purple line below. In a traditional scatterplot graph, time would run along the x-axis, with the y-axis showing two different sets of data. In the example below, these data sets are miles driven by Americans each year, as well as auto fatali - ties each year. Instead, a connected scatterplot combines the data from the two y-axes and lets time run as an annotated line across the graph. When Americans on occasion reduce their driving from one year to the next, the line goes backwards. Based on insights from Steve Franconeri Credit: Steve Haroz. This scatterplot is derived from one originally constructed by Hannah Fairfield for The New York Times . To interact with the connected scatterplot yourself, visit Haroz’s site here .