Experiment performed at UC-Davis; fifteen students participated. Each student was asked to place as many beans into a cup as he/she could, in 15 seconds. Each student performed this task once with the dominant hand, and once with the non-dominant hand, but the order of performance was randomized. The purpose of the study was to see whether manual dexterity was better for the dominant hand. Terminology: your dominant hand is the hand you use the most.
A data frame with 15 observations on the following 3 variables.
Number of beans placed into cup with the dominant hand.
Number of beans placed with the non-dominant hand.
Difference in number of beans placed (dominant hand minus non-dominant hand).