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Which of the following statements is not true?()
If the individual class frequency is divided by the total frequency, the result is the ().
A cumulative frequency polygon is also called ().
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). The average number of absences per employee, calculated from the personnel data of all employees, is a ().
The number of class intervals in a frequency distribution is usually between ().
某企業(yè)2018年技術(shù)工占50%,2019年新招收了一批學(xué)徒工,使學(xué)徒工的比重增加了10%。假定全廠各級(jí)工資水平均無變化,則2019年職工總平均工資將()
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()
對全國各鐵路交通樞紐的貨運(yùn)量、貨物種類等進(jìn)行調(diào)查,以了解全國鐵路貨運(yùn)概況。這種調(diào)查屬于()
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)?