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

一個(gè)地區(qū)一定時(shí)期的商品零售額屬于（）

One rule that must always be followed in constructing frequency distributions is that （）.

要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）

If data are grouped into intervals and the number of items in each group is listed, this could be called a （）

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 （）.

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

Which of the following statements is not true？（）

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(gòu)買商品需多支出40萬(wàn)元，報(bào)告期商品銷售額為200萬(wàn)元，則價(jià)格指數(shù)為（）