When working on my PhD in mechanical engineering, I created fairly large data compilations and I would include some assertions like this. I'd make them assertio

When working on my PhD in mechanical engineering, I created fairly large data compilations and I would include some assertions like this. I'd make them assertions because I considered data that had these faults to be not worth adding, so if the data wasn't a typo then I'd just cut it. It can be hard to think of good tests for data like this. Sometimes my assertions were wrong, e.g., I thought R^2 couldn't go below 0. That's actually false. One I've found useful to spot typos was to check whether a column which is incrementing is in fact incrementing. E.g., if a table is ordered by the pressure tested at, then obviously there's a typo is the pressure is not increasing.