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. 2011 Dec 13;12:470. doi: 10.1186/1471-2105-12-470

Table 1.

Average number of computed backbone tips over 10 distinct trees

Average number of computed backbone tips
Reduction Factor R 37831 (expected) 55593 (expected)

0.25 12668.0 (9457.75) 19366.7 (13898.25)

0.50 22340.0 (18915.5) 33501.5 (27796.5)

The average number of backbone tips is higher than the expected number n·R