The first chart is an example of people using 3D bar charts because they think their data are too boring and need dressing up. If that’s the case, delete the chart!
Understanding variation in treatment effects in education
A new report issued by IES: A key purpose of rigorous evaluations of education programs and interventions is to inform policy choices. Typically, such assessments focus on the overall or average treatment effect of the intervention on key outcomes. However, there are also important program and policy questions that pertain to variation in treatment effects across subgroups of study participants...
Illustrations of spurious correlations
Great website: