A.ogive
B.histogram
C.frequency distribution
D.stem and leaf plot
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A.Summarising data
B.Displaying aspects of the collected data
C.Reporting numerical findings
D.Estimating characteristics of the population
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
最新試題
為什么在計(jì)算平均指標(biāo)的基礎(chǔ)上還有必要進(jìn)一步計(jì)算變異指標(biāo)？
A cumulative frequency polygon is also called （）.
The number of class intervals in a frequency distribution is usually between （）.
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(dòng)？研究它的意義何在？如何測(cè)定季節(jié)變動(dòng)？
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？（）
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 （）.
If the individual class frequency is divided by the total frequency, the result is the （）.
如果居民按報(bào)告期價(jià)格購買商品需多支出40萬元，報(bào)告期商品銷售額為200萬元，則價(jià)格指數(shù)為（）
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 （）.