In statistical language, this estimate is called the between-column variance.
在统计学中这个估计值叫组间方差。
A final column in Table 5-1 indicates the amount over or under the budget for each category. This column is an indicator of the extent of variance from the project budget;
表5-1 的最后一栏显示了每一项次预算超支或勤俭的数值，这一栏也是预算偏差的唆使器。
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