1. An instructional tool for teaching statistic concepts comprising: a ramp structure including an inclined ramp surface having a top and a bottom and the ramp structure including first and second paths separated by a divider along the ramp surface; at least one treatment device to increase or decrease momentum of subject elements along the first path relative to the second path to form a treatment path and a non-treatment path; a scoring surface at the bottom of the inclined ramp surface to provide an output distance of the subject elements rolling down the inclined ramp surface along the treatment path and the non-treatment path; and a propensity input device above the treatment path and non-treatment path to apply a propensity input to the subject elements to provide a propensity for the subject elements to follow the treatment path as opposed to the non-treatment path.