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用迭代移动平均测量季节变化AI 解读

This paper presents a time-saving method for computing an iterated moving average with triangular weights to better represent the trend-cycle elements in a time-series for measuring seasonal variation. A printing-adding machine is used to obtain progressive summation of the Y-data values of a time series. A stencil having three suitably spaced slots is used to disclose progressively the three terms which are summed to obtain the graduated series required. Multiplied by the…

用迭代移动平均测量季节变化AI 解读

This paper presents a time-saving method for computing an iterated moving average with triangular weights to better represent the trend-cycle elements in a time-series for measuring seasonal variation. A printing-adding machine is used to obtain progressive summation of the Y-data values of a time series. A stencil having three suitably spaced slots is used to disclose progressively the three terms which are summed to obtain the graduated series required. Multiplied by the…