A.实际经济增长率
B.名义经济增长率
C.通货膨胀率
D.失业率
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A.0.5%
B.2%
C.4.8%
D.5%
A.杨格综合指数
B.马埃综合指数
C.费暄理想指数
D.平均指数
A.方案枝
B.状态枝
C.决策点
D.状态点
A.大中取小原则
B.小中取大原则
C.大中取大原则
D.折中原则
A.n
B.p
C.n-p
D.n+p
A.均大于0
B.均等于0
C.均小于0
D.均不为0
A.线性函数依存关系
B.确定性的数量依存关系
C.非线性函数依存关系
D.非确定性的数量依存关系
A.相互关联
B.互不相关
C.计量逐步精确
D.方法逐步改进
A.侧检验
B.左侧检验
C.双侧检验
D.上侧检验
A.精确假设
B.非精确假设
C.复合假设
D.备择假设
最新试题
One advantage of a stem and leaf plot over a frequency distribution is that （）.
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（）
Which of the following statements is not true？（）
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 student achieves an 82 on the first test in a statistics course. From this, she assumes that her average at the end of the semester (after other tests) will be about 82. This is an example of （）.
A cumulative frequency polygon is also called （）.
企业生产一种产品需顺次经过四个车间，这四个车间的废品率分别为1.5%、2.0%、2.0%和1.0%。该企业生产这种产品的平均废品率是多少？
最能反映离散程度的指标是（）
A summary measure that is computed from a sample to describe a characteristic of the population is called（）
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？（）