證券分析人員為了研究資金運(yùn)用效率對(duì)制造商收益的影響,隨機(jī)抽取了5個(gè)公司,得到如下資料:
要求計(jì)算:
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Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
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 cumulative frequency of the third class?()
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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()
The number of class intervals in a frequency distribution is usually between ().
品合格率指標(biāo)是()
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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 ().