A.descriptive statistics
B.inferential statistics
C.nonparametric statistics
D.wishful thinking
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A.One form of descriptive statistics uses graphical techniques
B.One form of descriptive statistics uses numerical techniques
C.In the language of statistics,the term population refers to a group of people
D.Statistical inference is used to draw conclusions or inferences about characteristics of populations based on sample data
A.organising data.
B.summarising data
C.presenting data in a convenient and informative way
D.doing all of the above
A.population
B.sample
C.parameter
D.statistic
A.a parameter
B.a statistic
C.a population
D.Both A and C are correct,since they are the same
A.population
B.sample
C.parameter
D.statistic
A.3 million registered voters in the state.
B.5000 registered voters interviewed.
C.53.6%of,or 2680,voters interviewed who plan to vote for him
D.46.4%of,or 2320,voters interviewed who plan not to vote for him
A.statistic
B.sample
C.population
D.parameter
A.statistic
B.population
C.parameter
D.sample
A.nonparametric statistics
B.nominal data
C.descriptive statistics
D.inferential statistics
最新试题
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 ().
A cumulative frequency distribution would provide().
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 ().
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()
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()
一个地区一定时期的商品零售额属于()
什么是季节变动?研究它的意义何在?如何测定季节变动?
以2000年a0为最初水平,2016年an为最末水平,计算钢产量的年平均发展速度时,须开()
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?()
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?