选择题:某产品的销售额时间序列符合加法模型Y=T+C+S+E,此模型中的T是指( ) 题目分类:社会调查方法 题目类型:选择题 查看权限:VIP 题目内容: 某产品的销售额时间序列符合加法模型Y=T+C+S+E,此模型中的T是指( ) A.趋势变动 B.周期变动 C.季节变动 D.随机波动 参考答案:
以年为时间单位对两年以上的市场发展前景进行预测称为( ) 以年为时间单位对两年以上的市场发展前景进行预测称为( ) A.短期预测 B.近期预测 C.中期预测 D.长期预测 分类:社会调查方法 题型:选择题 查看答案
There seems never to have been a civilization with There seems never to have been a civilization without toys, but when and how the 分类:社会调查方法 题型:选择题 查看答案
] —Tom came back home yesterday.—Really? Where ___ ] —Tom came back home yesterday.—Really? Where ________ at all? A.had he been 分类:社会调查方法 题型:选择题 查看答案
Communication through IT will become _______. Communication through IT will become _______.选择一项:a. less and less in real lifeb 分类:社会调查方法 题型:选择题 查看答案