« When should you leave the baseball stadium when the game is just too damn long | Main | What about daughters of politicians? »


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

Meic Goodyear

There may be another reason for the first mis-coding. I don't know what tax rules apply at JFK, but in the UK there can be different rates, with VAT (ie, purchase) tax applying to dine-in but not to take-away. The restaurant may record transations as dine-in and charge the tax, then report the transactions as take-away and keep the difference. I'm not suggesting they do, but it's a possibility.

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