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某廠某年職工勞動(dòng)生產(chǎn)率為20000元,是歷史最高水平的1.2倍。這里的1.2倍是()
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 approximate range of the number of phone calls arriving each hour?()
最能反映離散程度的指標(biāo)是()
A summary measure that is computed from a sample to describe a characteristic of the population is called()
Descriptive statistics deals with methods of()
常用的長(zhǎng)期趨勢(shì)測(cè)定的方法有哪些?各有什么特點(diǎn)?
Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
以2000年a0為最初水平,2016年an為最末水平,計(jì)算鋼產(chǎn)量的年平均發(fā)展速度時(shí),須開()
品合格率指標(biāo)是()
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)?