Khan/khan-exercises — Issue #14699: Standard deviation - right answer not accepted
Author: KhanBugz
Created: 2012-02-26 21:09:41+00:00
State: open
Labels: chrome, win7, wrong-or-unclear

ave: 6 std dev: 18.7
right answer is rejected

[standard_deviation.html?seed=73&problem=population](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/standard_deviation.html?seed=73&problem=population&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/standard_deviation.html?seed=73&problem=population&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%226%5C%22%2C%5C%2218.7%5C%22%5D%22%2C4606%5D%2C%5B%22hint-activity%22%2C%220%22%2C3%5D%2C%5B%22hint-activity%22%2C%220%22%2C11%5D%2C%5B%22hint-activity%22%2C%220%22%2C12%5D%2C%5B%22hint-activity%22%2C%220%22%2C12%5D%2C%5B%22hint-activity%22%2C%220%22%2C19%5D%2C%5B%22hint-activity%22%2C%220%22%2C23%5D%2C%5B%22hint-activity%22%2C%220%22%2C30%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%226%5C%22%2C%5C%2218.67%5C%22%5D%22%2C80%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%226%5C%22%2C%5C%2218.7%5C%22%5D%22%2C4%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%226%5C%22%2C%5C%2218.7%5C%22%5D%22%2C3%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%226%5C%22%2C%5C%2218.7%5C%22%5D%22%2C1%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%226%5C%22%2C%5C%2218.7%5C%22%5D%22%2C17%5D%5D)

[["6","18.7"],["6","18.67"],["6","18.7"],["6","18.7"],["6","18.7"],["6","18.7"]]

Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11

MathJax is loaded, ready, queue length: 0