Om Damani (ओम दम्माणी) damani at cse.iitb.ac.in
Mon Feb 25 10:49:47 CET 2013

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I wish to report the following bug.

Scipy v.11 library in python2.7 gives
spearmanrcorrel([1,2,3,4,5],[5,6,7,8,7]) = 0.8207 while scipy v.6 in
python2.5 gives spearmanr([1,2,3,4,5],[5,6,7,8,7]) = 0.825(which is
correct according to spearman correlation formula).

The spearman correlation for [1,2,3,4,5],[5,6,7,8,7] calculated online
according to formula available at :
https://statistics.laerd.com/calculators/spearmans-rank-order-correlation-calculator-1.php,
also gives 0.825.

--The definition of spearmanr function in Scipy v.11 is given at :
http://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.spearmanr.html#scipy.stats.spearmanr.

Thanks,
- Om Damani

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