How many pairwise comparisons are needed to learn the outcome of an election involving n=15 candidates ?

Dave Salomon asked Jun 5, 2023

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Dave Salomon asked Jun 5, 2023

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23 votes

Remember that

The formula for the number of independent pairwise comparisons is k(k-1)/2, where k is the number of conditions

In this problem

k=15

substitute

15(15-1)/2=105

therefore

Jay Querido answered Jun 10, 2023

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