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from
Brown Corpus
This distribution can be summarized by averaging the distance in grades apart: Af ; ;
which, divided by Af gives a mean of 1.07 grades apart.
If the distribution of the 71 items were wholly concordant in the two families, the distance would of course be 0.
If it were wholly random and unrelated, it would be 2.0, assuming the five classes were equal in n, which approximately they are.
The actual mean of 1.07 being about halfway between 0 of complete correlation and 2.0 of no correlation, it is evident that there is a pretty fair degree of similarity in the behavior even of particular individual items of meaning as regards long-term stem displacement.
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