« The causation creep | Main | How averages get usurped by policymakers »


Feed You can follow this conversation by subscribing to the comment feed for this post.


I see the same with student evaluations on a distance only course I teach. Sometimes excellent students will comment. and then they may say course is too easy. Poor students will usually take issue with anything that they can. Average students usually don't comment.

As to your first example if 70% of students score C or above then predicting that all of the students score C or above will give 70% prediction accuracy.

business schools in Chicago

Students' evaluation should not be based on exams only. I think that the true evaluation is the one based on the every day participation of the students basis.

The comments to this entry are closed.

Get new posts by email:
Kaiser Fung. Business analytics and data visualization expert. Author and Speaker.
Visit my website. Follow my Twitter. See my articles at Daily Beast, 538, HBR, Wired.

See my Youtube and Flickr.


  • only in Big Data
Numbers Rule Your World:
Amazon - Barnes&Noble

Amazon - Barnes&Noble

Junk Charts Blog

Link to junkcharts

Graphics design by Amanda Lee

Next Events

Jan: 10 NYPL Data Science Careers Talk, New York, NY

Past Events

Aug: 15 NYPL Analytics Resume Review Workshop, New York, NY

Apr: 2 Data Visualization Seminar, Pasadena, CA

Mar: 30 ASA DataFest, New York, NY

See more here

Principal Analytics Prep

Link to Principal Analytics Prep