Repeat this process for skew (Z). Add the t value and the current Z value to obtain the new skew (Z) value.

重复该过程以设置倾斜(Z)值，增加T值和当前Z值以获得新的倾斜(Z)值。

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Even a 10-year estimate doesn't completely eliminate the problem, because one extreme year will skew the result, Roeder said.

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"You don't want a couple of people who may not be reporting accurately to really skew the results, " said study co-author David Hemenway.

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