Unfortunately, determinations become trickier the more two tasks overlap (for example, if the means are one standard deviation apart), as Figure 2 illustrates.
不幸的是，两个任务的重叠部分越大，判断就越困难(例如，如果平均值只相差一个标准偏差)，见图2。
The indicators show that when governance is improved by one standard deviation, incomes rise about three-fold in the long run, and infant mortality declines by two-thirds.
治理指标表明，当治理出现一个标准偏差的改善，从长期看收入就会提高三倍，婴儿死亡率降低三分之二。
The indicators show that when governance is improved by one standard deviation, incomes rise about three-fold in the long run, and infant mortality declines by two-thirds.
治理指标表明，当治理出现一个标准偏差的改善，从长期看收入就会提高三倍，婴儿死亡率降低三分之二。
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