# Tagged Questions

A rank correlation is any correlation-measure based on ranks, such as Spearman's rho or Kendall's tau.

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### Spearman's Rho - from partial ranked variables

I have two variables which represent two performance measures. I ranked a finite set of elements according these two variables. Therefore, I have to ranks. Suppose the ranks are performed in ...
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### Kendall Tau-b correlation coefficient becomes more significant with many additional ties

Say I have two vectors of length N, x = [1, 10, 12, ..., 5, 6] y = [2, 11, 10, ..., 7, 9] I compute the Kendall tau-b rank order correlation on these two vectors ...
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### longitudinal correlation in SPSS

My clinical study aim is looking at treatment effect on two outcomes. Each subject underwent 3 measurements at 3 different time points at baseline, 6 and 12 months after initiated treatment. We ...
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### Correlation between a linear and a log series

I need to identify a relationship between two variables. I have two sets of measures performed by two competing systems, and I would like to compare how close the two systems are to each other. Here ...
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### Understanding the p-value in Spearman's rank correlation

I have some pairs of datasets (n=200 or thereabouts), of samples which are non-negative and not normally distributed. I think these pairs of variables are related, ...
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### Canonical correlation analysis with rank correlation

Canonical correlation analysis (CCA) aims to maximize the usual Pearson product-moment correlation (i.e. linear correlation coefficient) of the linear combinations of the two data sets. Now, consider ...
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### How to prove that the east teams are higher in the ranking that west or vise vera?

If we want to compare the rankings of teams that are from east or west, how can we show that east or west have higher rankings than other? Example ...
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### Spearman rank recommended n size

Is there a recommended n to test for Spearman's rank correlation? I have 2 lists of around 10,000 items. I read that Spearman's rank correlation is fine between 10-30 , can I use spearman to compare ...
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### Comparing the relationship between two sets of data where the one of the sets has more values than the other

I am working on a questionnaire with which I am supposed to find the relationship between one parameter and the other parameters, but the stationery parameter has six values and all the others have ...
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