Encyclopedia > Spearman's rho

  Article Content

Spearman's rank correlation coefficient

Redirected from Spearman's rho

Spearman's rank correlation coefficient or <math>\rho</math> (rho) is a non-parametric measure of correlation – that is, it assesses how well a linear equation describes the relationship between two variables without making any assumptions about the frequency distribution of the variables. To calculate <math>\rho</math>, raw scores are converted to ranks. <math>\rho</math> is a special case of the Pearson product-moment correlation coefficient in which the data are ranks, although a simpler formula is often used in calculation by hand:

<math> \rho = 1- {\frac {6 \sum D^2}{N(N^2 - 1)}}</math>

where:

D = the difference between the ranks of corresponding values of X and Y, and

N = the number of pairs of values.



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
BBC News 24

... BBC2, using terrestrial signals, and this is seen by some as influential (to a certain limited extent) in promoting the take-up of digital television. BBC News 24 ...

 
 
 
This page was created in 60.4 ms