在組距數(shù)列中，下限就是（）

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 （）.

Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）

Descriptive statistics deals with methods of（）

If the individual class frequency is divided by the total frequency, the result is the （）.

對(duì)全國(guó)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(guó)鐵路貨運(yùn)概況。這種調(diào)查屬于（）

如果居民按報(bào)告期價(jià)格購買商品需多支出40萬元，報(bào)告期商品銷售額為200萬元，則價(jià)格指數(shù)為（）

一個(gè)地區(qū)一定時(shí)期的商品零售額屬于（）

The number of class intervals in a frequency distribution is usually between （）.

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？