Khan/khan-exercises — Issue #11250: Mean median and mode - Exercises with multiple problem types
Author: KhanBugz
Created: 2012-01-15 03:27:44+00:00
State: open
Labels: chrome, other, xp

Reporter: tomschwarz2@gmail.com

There are a few excercises (Units and Mean median and mode come to mind) that have several types of problems, and it's possible to slip through without mastering the concept by getting a string of the easier type, and then passing the review in the same manner. For example, in units, I found converting decalitres to kilolitres pretty trivial, but the alien spaceship ones tripped me up.

Have you considered splitting these excercises up, making the bar harder to fill or forcing the problems to alternate? It feels possible to pass an excercise sometimes by getting lucky with a string of easy problems.

Keep up the great work!
Thomas

[mean_median_and_mode.html?seed=117&problem=mean](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/mean_median_and_mode.html?seed=117&problem=mean&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/mean_median_and_mode.html?seed=117&problem=mean&debug&activity=%5B%5D)

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