@khanacademy @salkhanacademy i m unfortunate that i m unable to see it. flash player is not working!
Try out the first #khanacademy computer science challenge from @salkhanacademy:http://www.khanacademy.org/cs/unbiased-estimate-of-population-variance-challenge/1164356446 …
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@khanacademy@salkhanacademy failing to see how this esoteric stats theory problem was chosen as first computer science challenge ?Thanks. Twitter will use this to make your timeline better. UndoUndo
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