My school spent quite a lot of time analysing charts, and the way they can be misleading. I think it was science (GCSE UK), but it was a while ago. Anyway that

My school spent quite a lot of time analysing charts, and the way they can be misleading. I think it was science (GCSE UK), but it was a while ago. Anyway that turned out to be a useful lesson. I don't find your example too egregious, it has percentages at least.