Abstract
Visual inspection and type of graphs used. The objective of this research was to see if the evaluation of the effectiveness of a given treatment through visual inspection depends on the type of graphs used. Three subjects were studied with 3000 graphs (1.000 line, 1.000 bar and 1.000 box-plots), each one representing the results of an A-B design. The results indicate that the subjects committed more errors when the data was presented by lines or bars instead of box-plots.