①趋势预测法（ Trend Projection Forecasts ）根据过去组织对人员的需求状况，推测出组织未来的人员需求机构和数量的方法叫趋势预测法。它是一种逻辑推理方法，简单易行。
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规范趋势外推预测法 normex forecasting
趋势外推预测法 projective forecasting
具趋势性数据的预测法 Methods for Data with Trends
综合预测法是区域预测的发展趋势。
The synthetical forecasting method is the tendency to the development of the area forecast.
计算结果表明，可采用指数平滑法预测超限事件的发生趋势，及时发现民航事故的早期征兆；
The calculation result is that exponential smoothing is suitable to forecast the trend exceed the limits so as to find the early signs of civil aviation accidents or calamity.
移动平均法是一种时间序列预测法，当时间序列没有明显的趋势变动时，使用移动平均就能够准确地反映实际情况。
Moving average method is one of time series forecasting method, if time series have no apparent tendency moving, using moving average method can accurately reflect actual situation.
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