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Which of the following is not the goal of descriptive statistics?()
要了解某地區(qū)全部大學(xué)生的就業(yè)情況,那么()
Descriptive statistics deals with methods of()
常用的長期趨勢測定的方法有哪些?各有什么特點(diǎn)?
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()
某企業(yè)的生產(chǎn)計(jì)劃完成百分比采用如下分組,請指出哪項(xiàng)是正確的()
時(shí)間序列構(gòu)成因素有哪些?分解的基本原理和思路是什么?
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 ().
某班的學(xué)習(xí)按考試成績分為60分以下,60-70,70-80,80-90,90-100,這種分組()
什么是季節(jié)變動(dòng)?研究它的意義何在?如何測定季節(jié)變動(dòng)?