Math Problem Statement
39.已知2005年一2014年某公司的销售利润如下表所示: (单位:百万元)
年份,2005,2006,2007,2008,2009,2010,2011,2012,2013,2014 销售利润,508,527,550,583,628,669,708,768,812,868
利用指数平滑法(平滑系数取0.1)求该企业销量的预测值、误差平方和均方误差(MSE)
Solution
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Math Problem Analysis
Mathematical Concepts
Time Series Forecasting
Exponential Smoothing
Error Calculation
Formulas
S_t = α * X_t + (1 - α) * S_{t-1}
SSE = Σ(X_t - S_t)^2
MSE = SSE / n
Theorems
Exponential Smoothing Method
Suitable Grade Level
University Level (Statistics or Business Forecasting)
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