I am reading an article where the authors mention something they call the expected frequency of a word in a corpus without explaining or giving a definition of what this means.
The article in question is A New Academic Vocabulary List by D. Gardner and M. Davies. You can find a version online: http://courses.washington.edu/englhtml/engl563/PDFs/Applied%20Linguistics-2013-Gardner-applin_amt015.pdf
Is there a standard way expected frequency is calculated?