Khan/khan-exercises — Issue #9132: Mean median and mode - Not issuing correct answer response to correct answer.
Author: KhanBugz
Created: 2011-12-20 22:00:36+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Find Arithmetic Mean of 8,6,8,2,8,7,4

Showing integers, simplified proper fraction, simplified improper fraction, mixed numbers, and exact decimals as acceptable formats.

Mean=43/7 OR 6.142857143(since repeating)

It does not accept the exact decimal as correct. It does not accept it as shortened/rounded(since answer is the same) to hundredths. Not a big deal, just could annoy someone by setting back their streak when they are on a roll. Since this number is repeating I would suggest removing exact decimal answers from the accepted format. Again, not complaining, just an issue I noticed as there is no "correct" way to answer this question in decimal format.

[mean_median_and_mode.html?seed=159&problem=mean](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/mean_median_and_mode.html?seed=159&problem=mean&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/mean_median_and_mode.html?seed=159&problem=mean&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%226.142857143%5C%22%22%2C73%5D%2C%5B%22incorrect-activity%22%2C%22%5C%226.14%5C%22%22%2C40%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22hint-activity%22%2C%220%22%2C4%5D%2C%5B%22incorrect-activity%22%2C%22%5C%226.142857143%5C%22%22%2C30%5D%2C%5B%22incorrect-activity%22%2C%22%5C%226.14%5C%22%22%2C45%5D%2C%5B%22incorrect-activity%22%2C%22%5C%226.142857142%5C%22%22%2C554%5D%5D)

["6.142857143","6.14","6.142857143","6.14","6.142857142"]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0.1) Gecko/20100101 Firefox/8.0.1

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