【单选题】【消耗次数:1】
( )既适合于有趋势变动又有波动的时间序列,也适合有波动的季节变动现象的预测。
平均增减量预测法
平均发展速度预测法
加权平均预测法
移动平均预测法
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相关题目
【判断题】 时间序列随时间变化而波动很大,此时可用移动平均法预测。()
①  正确
②  错误
【单选题】 ( )是指当时间序列环比增减量相差不大的情况下,以平均增减量为依据,建立预测模型计算预测值的方法。
①  序时平均数预测值
②  环比增减量预测法
③  平均增减量预测法
④  平均发展速度预测法
【判断题】 销售预测中的算术平均法适用于销售量稳定,没有季节性波动的产品的预测
①  正确
②  错误
【判断题】 移动平均法预测,N越小,灵敏性越好。
①  正确
②  错误
【单选题】 在应用一次移动平均法对时间序列预测中,下列哪一种说法正确()
①  n取的越大,对时间序列修复越强
②  第一移动平均值放在时间序列的末端
③  时间序列波动很大的情况下
④  以上都不正确
【判断题】 二次移动平均法的预测公式与二次指数平滑预测公式相同,但含义不同。()
①  正确
②  错误
【判断题】 移动平均法预测,n值大,移动平均值的修匀性好,但灵敏性差。
①  正确
②  错误
【多选题】 用几何平均法计算平均发展速度侧重考察?
①  现象各期发展水平的最初水平
②  现象在发展阶段中各期的发展水平
③  现象各期的环比发展速度
④  现象各期发展水平的累计水平
⑤  现象各期发展水平的最末水平
【单选题】 一般来说,加权平均预测法给予近期观察值以( )的权数。
①  较大
②  不变
③  较小
④  1
【单选题】 定性预测法与定量预测法的主要区别是( )。
①  定性预测只预测市场发展趋势,不测算预测值
②  定性预测法应用起来灵活方便
③  预测依据不同
④  定量预测法测算预测值
随机题目
【单选题】 What role does a teacher play in the following activity? The teacher gives students 2 minutes to skim a text, and when time is up, he asks students to stop and answer some questions.
①  Controller
②  Assessor
③  Organizer
④  Prompter
【单选题】 What are the possible roles of a teacher?
①  Controller, assessor
②  Organizer, prompter
③  Participant, resource-provider
④  All of the above.
【单选题】 Which of the following is the time when students study by themselves?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small groups
④  When students are expected to work on their own at their own speed.
【单选题】 What role does a teacher play in the following activity? When a student has made a sentence with borrow, “I borrowed a paper to write a letter”, the teacher says, “Well, we don’t say a paper, we say a piece of paper.”
①  Controller
②  Assessor
③  Organizer
④  Prompter.
【单选题】 Why do novice teacher often have problems giving clear instructions?
①  Their language proficiency is low
②  They are fresh from the university
③  Their instructions are too short
④  They are not able to target their instructions to the level of the learners.
【单选题】 When is appropriate for the teacher to give classroom instructions to students?
①  Give directions to tasks or activities, checking comprehension, giving feedback
②  Providing explanations to a concept or language structure, drawing attention
③  Setting requirements, checking comprehension, assigning homework
④  All of the above.
【单选题】 What are not good rules to follow for making instructions effective?
①  Use simple instructions and make them suit the comprehension level of the students
②  Use the mother tongue only when it is necessary
③  Use body language to assist understanding
④  Not model the task or activity before letting students move into groups or pairs .
【单选题】 What role does a teacher play in the following activity? When the students have in groups decided where to go for a spring outing, the teacher asks each group to tell the others why they have made such a choice.
①  Controller
②  Assessor
③  Organizer
④  Prompter.
【单选题】 What role does a teacher play in the following activity? The teacher asks students to produce conversations (either orally or in writing) by using particular patterns or expressions they have just learned.
①  Controller
②  Assessor
③  Organizer
④  Prompter.
【单选题】 What role does a teacher play in the following activity? When students are doing a group-work task, the teacher joins one or two groups for a short period of time.
①  Controller
②  Assessor
③  participant
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