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通货膨胀率

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经济学上,通货膨胀率(Inflation rate)为物价平均水准的上升幅度(以通货膨胀为准)。以气球来类比,若其体积大小为物价水准,则通货膨胀率为气球膨胀速度。或说,通货膨胀率为货币购买力的下降速度。

P1 为现今物价平均水准(现今的GDP平减指数), P0 为去年的物价水准(去年的GDP平减指数),年度通货膨胀率可测量如下:

通货膨胀率 = (P1 - P0)/P0×100%

计算通货膨胀率有其他方法,如以P1的自然对数 减去 P0的自然对数,同样以百分比表示。

核心通胀率(core inflation):是指消费价格指数中剔除食品和能源价格变化之后的价格变化率。

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通货膨胀率
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