CaffeineTaps: Caffeine Taps
In Lock5withR: Datasets for 'Statistics: Unlocking the Power of Data'

Finger tap rates with and without caffeine

A dataset with 20 observations on the following 2 variables.

Taps Number of finger taps in one minute
Group Treatment with levels Caffeine and No Caffeine
Caffeine a recoding of Group with levels "Yes" and "No"

Results from a double-blind experiment where a sample of male college students to tap their fingers at a rapid rate. The sample was then divided at random into two groups of ten students each. Each student drank the equivalent of about two cups of coffee, which included about 200 mg of caffeine for the students in one group but was decaffeinated coffee for the second group. After a two hour period, each student was tested to measure finger tapping rate (taps per minute). The goal of the experiment was to determine whether caffeine produces an increase in the average tap rate.

Hand, Daly, Lund, McConway and Ostrowski, Handbook of Small Data Sets, Chapman and Hall, London (1994), pp. 40

Lock5withR documentation built on May 2, 2019, 3:43 p.m.