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试解释趋势剔除法的含义。

高老师2年前 (2024-07-17)管理数量方法与分析(11752)21

试解释趋势剔除法的含义。

在具有明显的长期趋势变动的时间序列中，为了测定季节变动，必须首先将趋势变动因素在时间序列中的影响加以剔除。
这种事先剔除长期趋势变动的因素，而后计算季节比率的方法，称为趋势剔除法。

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