某鞋廠為了制定生產(chǎn)計(jì)劃，調(diào)查了100 個(gè)成年女性穿鞋的尺寸，數(shù)據(jù)如下：
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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). 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 （）.
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過四個(gè)車間，這四個(gè)車間的廢品率分別為1.5%、2.0%、2.0%和1.0%。該企業(yè)生產(chǎn)這種產(chǎn)品的平均廢品率是多少？
在組距數(shù)列中，下限就是（）
One advantage of a stem and leaf plot over a frequency distribution is that （）.
一個(gè)地區(qū)一定時(shí)期的商品零售額屬于（）
If data are grouped into intervals and the number of items in each group is listed, this could be called a （）
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（）
Which of the following statements is not true？（）
If the individual class frequency is divided by the total frequency, the result is the （）.
如果居民按報(bào)告期價(jià)格購(gòu)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（）