Statistically Significant Variations of Word Frequency
I frequently read commentators asserting that a certain word is used more or less frequently in a given book than the rest of the Greek NT, but these generally seem to be 'gut' observations rather than statistically sound conclusions.
The new concordance feature in Logos Now would be a perfect place to highlight statistically significant variations of word frequency. I realize that the cut-off for "statistically significant" is somewhat arbitrary and the comparison corpus would need to be defined (entire NT or perhaps a broader ancient Greek corpus), but it looks like chi squared or Yates' corrected chi-squared are generally accepted ways to compare two literary corpus. The addition of this feature would be relatively simple and would provide statistical rigor to frequency discussions.
Related article: http://eprints.lancs.ac.uk/42528/1/IJES_-_final.pdf