Similar words in the same position

[MarcoP]

Thank you, bi3mw, things are much clearer now!
I guess that an additional test you could run is randomly scrambling word order in one of the two pages (without altering words) and see how much the results change. This would allow you to measure the impact of word order.

Here are some considerations that ignore word order, but I am not sure they are correct:

Word counts:

• 362 You are not allowed to view links. Register or Login to view.
• 337 You are not allowed to view links. Register or Login to view.

Words common among the two files:
153 (with 58 different word types: most shared words appear multiple times in both files)
Averagely, common words repeat in both files 153/58=2.64 times

For each word in 84v, the probability that it repeats somewhere in You are not allowed to view links. Register or Login to view. is:
153/362=42%

The probability that you find that specific repeating word is:
2.64 * 1/58 = 4.5%

The joint probability of finding a repeating word and that it is the correct one is:
42%*4.5%=1.9%

The expected number of perfect matches is 1.9% of the 337 words in f84v:
337*1.9%=6.4


You found 9 exact co-occurrences versus an expected number of 6.4.


Extracts of the same size from the "De Balneo" chapter share 94 words (vs 153 in the VMS). This tells us that a lower number of matches is expected.