A.變量名的字符數(shù)不能超過(guò)8個(gè)
B.變量名不區(qū)分大小寫(xiě)字母
C.“all”是一個(gè)合法的變量名
D.變量名可以以漢字開(kāi)頭
E.默認(rèn)的變量名是以“VER”開(kāi)頭
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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(chǎng)各級(jí)工資水平均無(wú)變化,則2019年職工總平均工資將()
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?
One rule that must always be followed in constructing frequency distributions is that ().
Descriptive statistics deals with methods of()
The number of class intervals in a frequency distribution is usually between ().
If the individual class frequency is divided by the total frequency, the result is the ().
最能反映離散程度的指標(biāo)是()
Which of the following statements is not true?()
A cumulative frequency polygon is also called ().
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 ().