Case Studies and White Papers

A Simple Comparative Experiment with Paper Clips

Published: January 1992
Author: Mark Anderson

Details and demonstrates a fun experiment to do at home or in class to build understanding of variation and how it can be handled with simple comparative designs. For teaching purposes it works best if each student breaks two brands of clips, thus providing data for a paired t-test, which blocks out variability due to the tester.

An updated version of paper-clip experiment is provided in the June 2009 Stat-Teaser posted at

Publication: Stat-Ease, Inc.

Published: January 1992
Authors: Patrick Whitcomb, Kinley Larntz

A look at augmenting the usual probability plot effects with points representing pure error.

Publication: Conference