Salt Lake City, Utah
June 23, 2018
June 23, 2018
July 27, 2018
Dropping the worst homework, or the homework with the lowest grade, is a common practice that instructors do when they intend to increase their students' grades. The following article shows that if this measure is taken at some stage during the course, other than at the end of it, the grade of some students worsens after dropping their worst homework and the perception of their performance is biased. To illustrate this phenomenon, we provide an example in which this decrease can be of almost 4% and we find that this effect is more felt if a student has performed poorly in a midterm exam, i.e. it targets those to whom this policy is supposed to help. While in terms of equality this policy is usually extended to all the students, we conclude that its performance fails when it comes to assessing its equity. This is due to the effect of the so-called Simpson's Paradox.
Rubio-Herrero, J. (2018, June), Simpson's Paradox and Equity in a Classroom: When Dropping the Worst Homework is Prejudicial to Your Students Paper presented at 2018 ASEE Annual Conference & Exposition , Salt Lake City, Utah. https://peer.asee.org/30964
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