Khan/khan-exercises — Issue #12183: Creating box and whisker plots - Which quartile definition?
Author: KhanBugz
Created: 2012-01-26 15:23:26+00:00
State: open
Labels: lion, safari, wrong-or-unclear

Reporter: steve.tarver@gmail.com

There are two methods for determining quartiles on http://en.wikipedia.org/wiki/Quartile. It feels like the approach has changed but probably, I misunderstood the nuances. I think the associated video should spend some time on nuances and which will be used here; specifically - averaging middle two numbers when determining median and when median is used/dropped in determining quartiles.

[creating_box_and_whisker_plots.html?seed=9&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/creating_box_and_whisker_plots.html?seed=9&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/creating_box_and_whisker_plots.html?seed=9&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B1%2C3%2C5%2C7.5%2C15%5D%22%2C353%5D%2C%5B%22incorrect-activity%22%2C%22%5B1%2C3%2C5%2C8.5%2C15%5D%22%2C48%5D%2C%5B%22hint-activity%22%2C%220%22%2C136%5D%2C%5B%22hint-activity%22%2C%220%22%2C139%5D%2C%5B%22hint-activity%22%2C%220%22%2C141%5D%2C%5B%22hint-activity%22%2C%220%22%2C143%5D%2C%5B%22hint-activity%22%2C%220%22%2C146%5D%2C%5B%22hint-activity%22%2C%220%22%2C149%5D%5D)

[[1,3,5,7.5,15],[1,3,5,8.5,15]]

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