A.基期价格
B.现期价格
C.基期销售量
D.现期销售量
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A.产量
B.价格
C.产值
D.综合指数变形权数
A.物量类指数
B.物价类指数
C.价值类指数
D.总量类指数
A.期望损失最小
B.最大损失最小
C.最大收益最大
D.最小损失最小
A.重复性决策
B.一次性决策
C.确定性决策
D.非概率型决策
A.确定性决策
B.非确定性决策
C.等可能性决策
D.非计算性决策
A.定基发展速度大致相等
B.环比发展速度大致相等
C.逐期增长量大致相等
D.二级增长量大致相等
A.直线趋势模型
B.指数曲线趋势模型
C.二次曲线趋势模型
D.修正指数曲线趋势模型
A.算术平均法
B.几何平均法
C.代数平均法
D.调和平均法
A.时点序列
B.时期序列
C.特征序列
D.平稳序列
A.0.19
B.0.81
C.0.6561
D.0.9
最新试题
The number of phone calls arriving at a switchboard each hour has been recorded and the following frequency distribution has been developed.What is the approximate range of the number of phone calls arriving each hour？（）
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）
The number of phone calls arriving at a switchboard each hour has been recorded and the following frequency distribution has been developed.What is the cumulative frequency of the third class？（）
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). Personnel records of 50 employees are selected for analysis. (The plant employs 250.) For this study, the average number days absent for these 50 employees is a （）.
对全国各铁路交通枢纽的货运量、货物种类等进行调查，以了解全国铁路货运概况。这种调查属于（）
A summary measure that is computed from a sample to describe a characteristic of the population is called（）
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在组距数列中，下限就是（）
A cumulative frequency distribution would provide（）.
什么是季节变动？研究它的意义何在？如何测定季节变动？