Hi Rick.

I have a question about the way in which you compute the confidence interval. You compute M1=round((N-C)/2) where N is the number of *valid* slopes, i.e. duplicate data points eliminated. Is this correct? Since the confidence interval is based on Kendall's Tau, I'm wondering if N should be simple the uncorrected number of data pairs, i.e. N=n*(n-1)/2 where n is the total number of data points.

--Ken