Khan/khan-exercises — Issue #10033: Creating box and whisker plots - position of 1st and 3rd quartiles
Author: KhanBugz
Created: 2012-01-02 17:53:37+00:00
State: open
Labels: firefox, other, win7

It's been a few years since I've done stats, maybe I've made a mistake; Out of 15, the first quartile (Q1) should be 3.75 place (25% of all numbers should be below this position) in the set of ordered numbers. The third quartile is also in the wrong place. According to the answer "show solution" the poition should be 4.5 positions for Q1.

[creating_box_and_whisker_plots.html?seed=18&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/creating_box_and_whisker_plots.html?seed=18&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/creating_box_and_whisker_plots.html?seed=18&problem=0&debug&activity=%5B%5B%22correct-activity%22%2C%22%5B5%2C10%2C11%2C13%2C15%5D%22%2C84%5D%5D)

[[5,10,11,13,15]]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0.1) Gecko/20100101 Firefox/6.0.1

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