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 （）.
A cumulative frequency distribution would provide（）.
The number of class intervals in a frequency distribution is usually between （）.
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（）
One advantage of a stem and leaf plot over a frequency distribution is that （）.
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？
要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）
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？
某廠某年職工勞動生產(chǎn)率為20000元，是歷史最高水平的1.2倍。這里的1.2倍是（）
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）