A.物量类指数
B.物价类指数
C.价值类指数
D.总量类指数
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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
A.直线趋势
B.曲线趋势
C.异方差
D.异常数据
使用最小二乘法估计得出的样本回归直线必然通过点()
A.(0,0)
B.(x,0)
C.(0,y)
D.(x,y)
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?()
品合格率指标是()
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?()
A politician who is running for the office of premier in a state with 3 million registered voters commissions a survey. In the survey, 53.6% of the 5000 registered voters interviewed say they plan to vote for him. The population of interest is the()
A cumulative frequency polygon is also called ().
If the individual class frequency is divided by the total frequency, the result is the ().
某厂某年职工劳动生产率为20000元,是历史最高水平的1.2倍。这里的1.2倍是()
变量数列中,各组频率之和应()
Which of the following is not the goal of descriptive statistics?()
一个地区一定时期的商品零售额属于()