Hadley Wickham asks:
I was wondering if you knew of any good articles on the use of error bars. I’m particularly looking for articles that discuss the difference between error of means and error of difference in the context of models (e.g. mixed models) where they are very different. I suspect every applied field has a couple of good articles, but it’s really hard to search for them.
Can anyone help on this? My only advice is to get rid of those horrible crossbars at the ends of the error bars. The crossbars draw attention to the error bars’ endpoints, which are generally not important at all. See, for example, my Anova paper, for some examples of how I like error bars to look.