A.Summarising data
B.Displaying aspects of the collected data
C.Reporting numerical findings
D.Estimating characteristics of the population
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A.descriptive statistics
B.inferential statistics
C.nonparametric statistics
D.wishful thinking
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
最新試題
某企業(yè)2018年技術工占50%，2019年新招收了一批學徒工，使學徒工的比重增加了10%。假定全廠各級工資水平均無變化，則2019年職工總平均工資將（）
對某班級學生的生活狀況進行統計調查，下列標志中屬于不變標志的是（）
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？（）
為什么在計算平均指標的基礎上還有必要進一步計算變異指標？
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 （）.
常用的長期趨勢測定的方法有哪些？各有什么特點？
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？（）
A summary measure that is computed from a sample to describe a characteristic of the population is called（）
什么是季節(jié)變動？研究它的意義何在？如何測定季節(jié)變動？
A cumulative frequency polygon is also called （）.