机电产品价格的预测方法简介

依据历史价格，利用多元回归分析的方法预测机电产品的价格。在预测过程中，针对产品历史价格空缺年度较多的现象，引入价格指数，把产品价格预测的问题转化为对价格指数的预测；在回归分析中，以时间和价格政策作为价格指数的显著性因素。最后，讨论价格指数拟合值的性质。

A Method for Forecasting the Prices of Mechanical and Electric Products

Multivariate regression analysis is employed to predict the prices of mechanical and electric products according to historical prices. Because there are many years in which the product price data are unavailable, a price index is introduced into the prediction. Thus, the problem of forecasting the product prices is converted into the one of forecasting the price indexes. In the regression analysis, the time and price policies are taken as significant factors of the price index. The characteristics of the fitting values of the price index are also discussed.