count.combn | R Documentation |
This function calculates the number of paired comparisons needed to compare a set of N items.
count.combn(nitem)
nitem |
Number of items. |
This function is only useful, if the number of paired comparisons of a full design, that is all possible paired comparisons, is of interest. Then the number is
\frac{N\times(N-1)}{2}
An integer corresponding to the number of paired comparisons.
# Number if paired comparisons for a set of 15 items = 105.
count.combn(15)
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