# Monthly Archives: August 2009

## R GUI page on the R wiki

August 3, 2009
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I've started the process of moving the content of this page to the R wiki. The motivation is that the content will become dynamic and updated much more often, people can add their own project, we can have use cases of each gui, tutorials, feature c...

## Parametric method for the study of the correlation: the Pearson r-test

August 3, 2009
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Suppose you want to study whether there is a correlation between 2 sets of data. To do this we compute the Pearson product-moment correlation coefficient, which is a measure of the correlation (linear dependence) between two variables X and Y; then we ...

## Parametric method for the study of the correlation: the Pearson r-test

August 3, 2009
By

Suppose you want to study whether there is a correlation between 2 sets of data. To do this we compute the Pearson product-moment correlation coefficient, which is a measure of the correlation (linear dependence) between two variables X and Y; then we ...

## useR! 2009 conference, Rennes, France

August 2, 2009
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Since my last attendance of the useR conference in Vienna, Austria, I have always wanted to go back. However, the high registration fee was always the factor that chills me off.This year, I am taking advantage of my last year as the student (the regis...

## useR! 2009 conference, Rennes, France

August 2, 2009
By

Since my last attendance of the useR conference in Vienna, Austria, I have always wanted to go back. However, the high registration fee was always the factor that chills me off.This year, I am taking advantage of my last year as the student (the regis...

## Example 7.8: Plot two empirical cumulative density functions using available tools

August 1, 2009
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The empirical cumulative density function (CDF) (section 5.1.16) is a useful way to compare distributions between populations. The Kolmogorov-Smirnov (section 2.4.2) statistic D is the value of x with the maximum distance between the two curves. As an...