Deidra Young wrote:
Hi Roger,
Only one thing I don't quite follow...
The tab command will produce Kendall's tau-b and approximate SE. However,
Sommers' D produces tau-a only.
How do tau-a and tau-b differ?
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You'll find a description of each on Roger's website. Take a look at
Section 2 on Page 2 of
www.imperial.ac.uk/nhli/r.newson/papers/params.pdf
Joseph Coveney
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