A study is done to determine whether switching laptops to use "butterfly"-style keyboards (where keys are almost flat and sink only slightly when pressed) affect the number of words typed per minute. A pool of 10 long-time laptop users is split at random into two groups of size n=5. One group uses a traditional keyboard for a typing exercise, and the other group carries out the same typing exercise using a butterfly keyboard. The results are collected and shown below: Classic Keyboard WPM: 41, 70, 25, 63, 58 Butterfly Keyboard WPM: 36, 62, 20, 58, 41