Pie Charts are the Worst [1]. In this context, a single pie chart is OK. I agree bar and line charts should usually be sufficient. http://www.businessinsider.c

Pie Charts are the Worst [1]. In this context, a single pie chart is OK. I agree bar and line charts should usually be sufficient. http://www.businessinsider.com/pie-charts-are-the-worst-2013-6 http://www.businessinsider.com/pie-charts-are-the-worst-2013...