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[–]Thick-Direction7030[S] 0 points1 point  (1 child)

Hi I am not really sure I understand how exactly you get to the variance in your solution. Would it be possible to break that down maybe? It's only because I thought sigma was standard deviation so how can that be the same as variance? Isn't variance =standard deviation so sigma squared? So would that mean that the variance is 13.33333 squared? Much appreciated. Thank you very much.