A.1065
B.1066
C.1067
D.1068
您可能感兴趣的试卷
你可能感兴趣的试题
A.Z<-1.96
B.Z>1.96
C.Z>1.65
D.Z<-1.65
A.7~13
B.8~12
C.9~11
D.9.5~10.5
A.右侧检验
B.左侧检验
C.双侧检验
D.上侧检验
A.概率
B.事件
C.实验
D.样本空间
A.中位数检验是一种两独立样本的非参数检验方法
B.中位数检验是一种多独立样本的非参数检验方法
C.中位数检验使用的统计量是卡方统计量
D.中位数检验中要求各组样本中的个案相同
E.中位数检验中要计算各变量值的秩
A.非参数检验是统计推断的基本内容
B.在总体分布已知时，才可以使用非参数检验方法
C.非参数检验是对总体均值、方差等推断的方法
D.非参数检验是对总体分布形态进行推断的方法
E.在总体分布未知时可以使用非参数检验方法
A.控制变量不同水平下观测变量各总体均值差异显著
B.控制变量不同水平下的效应同时为0
C.控制变量不同水平的变化没有对观测变量产生显著影响
D.控制变量不同水平下的效应不同时为0
E.控制变量不同水平下观测变量各总体均值无显著差异
最新试题
某企业的生产计划完成百分比采用如下分组，请指出哪项是正确的（）
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？（）
Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a deteriorating sales trend. Specifically, the number of customers is stable at 1500 but they are purchasing less each year. She orders her staff to search for causes of the downward trend by selecting a focus group of 40 industrial customers. For this study, the set of 40 industrial customers is a （）.
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 （）.
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). The average number of absences per employee, calculated from the personnel data of all employees, is a （）.
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 statements is not true？（）
对某班级学生的生活状况进行统计调查，下列标志中属于不变标志的是（）
If the individual class frequency is divided by the total frequency, the result is the （）.
A cumulative frequency distribution would provide（）.