年份家电产量指数平均值标准误差199573519968967351997812783.31998945791.9119991056837.837129.333220001976903.2859154.7636200123571225.1001638.1607200230781564.6701909.1219200336522018.66911254.602200440582508.66831442.121735879.9818.79932.379124.44591043.6379109.27261882.7638547.87782309.5764608.13413001.1576749.37173586.9158642.643112345678910010002000300040005000指数平滑实际值预测值数据点值12345678910020004000指数平滑实际值预测值数据点值678910数平滑实际值预测值点678910数平滑实际值预测值点年份家电产量一次指数平滑二次指数平滑199573519968967351997812879.97351998945818.79865.4119991056932.379823.452200019761043.6379921.4863108.0656200123571882.763791031.4227498.25058200230782309.5763791797.629685500.5223200336523001.1576382258.38171577.8673200440583586.9157642926.880045716.144112345678901000200030004000指数平滑数据点值3456789指数平滑实际值预测值数据点家电产量一次指数平滑二次指数平滑三次指数平滑标准误差735896735812879.9735945818.79865.417351056932.379823.452852.36919761043.6379921.4863826.343723571882.763791031.42274911.9720494.6838230782309.5763791797.6296851019.4776789.7343836523001.1576382258.381711719.814484457.835940583586.9157642926.8800452204.524987550.7097123456701000200030004000指数平滑数据点值2345678指数平滑实际值预测值数据点
