SAT scores remain sluggish despite funding increase (OR...)

SAT scores soar despite sluggish funding (OR...)

Why dual axis charts are a bad idea.

Click on the "OR" in the headline to see the same data drawn with different scales.

An example taken from Howard Wainer's Understanding Graphs and Tables (figs 6 & 7) for more on the problems of dual y-axes see Steven Few's Dual-Scaled Axes in Graphs Are They Ever the Best Solution?