Occasionally I need to present some figures that I calculated with custom scripts against a dataset, such as a dictionary, text corpus, or some form of lexical database. The calculations are my own, but the dataset was created by other researchers. When presenting my figures, how can I write an APA-style in-text citation in a manner which makes it clear that I relied on the dataset, but that I did not take the figures from somewhere explicitly stated in the dataset? I do not wish readers to blame that source I cited if my figures are wrong.
Here is a simple example:
'E' is the most frequently occurring vowel in the Spanish language and appears most often after the letter 's' (Brown, E. K., 2014).