Well, you can see you're going to be dividing not by a hundred here, but by a hundred times a hundred, so it's going to reduce this from .04 to .004.

你可以看出,这儿就不是除以100了,而是除以100*100了,这里就从0.04降到了0.004

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So that's .16/100; so the standard deviation is .04.

那就是0.16/100,所以标准差等于0.04

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