Hi Marjan, I found a couple of discussion about the calculation of Q1, Q3 (and with it IQR) in the web before starting this thread (e.g. http://www.maths.murdoch.edu.au/units/statsnotes/samplestats/quartilesmore.html ). Even if this situation doesn't satisfy at all - I think your proposal should slo...

Hi Narcís,

similar - but it's not same (as far as I understand). I got a boxplot like this:

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|~~~~|
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where ~~~~ is the whisker! Q3 is bigger than the Adjacent3 in this case.

Hi world, i create a box plot based on the sorted data 0 (19 times) 6.6 7.1 9.0 14.2 14.2 16.6 This creates an box from 0 to ~ 1.66. If I understand the source code right, the 1.66 should be an interpolation. What I don't understand now is, why the upper whisker is drawn from 1.66 DOWN TO 0 (running...