This image appeared on line without attribution. It’s been reposted so many times, it’s tough to say, but it’s probably from a college. One would imagine there’s a second set of eyes reviewing such things. As time goes on, we’ll start to categorize the nature of these errors. Indeed 20 is 1/3 of 60, but the full pie chart is 80 (million). We’ll file this under fractions.
Another category you can add is *graphs*, as I am sure you will later have a lot of examples showing errors in graphing. (I think a post can belong in more than one category.)
Yes, and I have one in mind, an example from finance. Will post it in a few days. The site is still “in progress”, next, I need to add a menubar, and a tab for readers to submit examples. Thanks for visiting.