月份序号123456789101112131415161718产品销量指数平滑预测3157832581.231145.41833398.167234419.2668833447.7067532393.022733285.2090835448.0836338059.2334543357.6933843263.0773545453.9309446166.0523841785.9009542352.3603845668.94415标准误差31578332503018834900351003280031690338803689039800468904320046915466413886660000 427304788050000 4893140000 30000 60000 50000 40000 值2745.8317152751.9342472557.0260141693.9248981625.1165392469.5143683373.6624586052.9918625684.6718195517.8556332218.5890954762.1854324304.7905855314.75328830000 20000 10000 0 1234567产品销量预测20000 10000 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18指数平滑实际值预测值789101112131415161718数据点y = 29760e0.027xR² = 0.7667 18
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