Data Collection

A short song describing the benefits of blocking in experimental design by Heather Nichols, a teacher at Oak Creek High School in Wisconsin.  It may be sung to the tune of the traditional Scottish Gaelic tune, "Bunessan." The Randomization Song teaches the benefits of random assignment in an experiment. Randomization is relied upon to reduce bias or control effects of confounding variables and create comparable treatment groups. It also alludes to the use of random sampling and the generalization that allows so an instructor can make a comparison between random assignment and random sampling. The song was part of a pair of songs (along with the Blocking Song) that took the grand prize for the 2025 A-mu-sing Contest.

A joke to initiate a conversation about the importance of understanding your Sampling Frame when conducting surveys.  The joke was written by Larry Lesser from The University of Texas at El Paso in 2021.

A cartoon that can be a vehicle to discuss the old GIGO adage (Garbage In Garbage Out) indicating how poor data may well produce poor results. The cartoon was used in the September 2022 CAUSE cartoon caption contest and the winning caption was written by Jonathan Boucher, a student at Colorado University in Boulder.  The cartoon was drawn by British cartoonist John Landers (www.landers.co.uk) based on an idea by Dennis Pearl from Penn State University.

A cartoon that invites conversation about the type of biases that may result from the way a pollster handles the logistics of taking a survey and thus the importance of careful planning.  The cartoon was used in the February 2022 CAUSE cartoon caption contest and the winning caption was written by Don Bell-Souder a student at University of Colorado, Boulder. Two alternative captions with the same basic learning object are “Selection bias is in the eye of the beholder” written by Sarah Arpin and “ACME polling finds that bootstrapping still reflects self-reporting bias.” Written by Rosie Garris who are also both students at University of Colorado, Boulder. The cartoon was drawn by British cartoonist John Landers (www.landers.co.uk) based on an idea by Dennis Pearl from Penn State University.