A cumulative frequency distribution would provide（）.

Descriptive statistics deals with methods of（）

品合格率指標(biāo)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 （）.

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

A student achieves an 82 on the first test in a statistics course. From this, she assumes that her average at the end of the semester (after other tests) will be about 82. This is an example of （）.

A cumulative frequency polygon is also called （）.

變量數(shù)列中，各組頻率之和應(yīng)（）

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（）

One advantage of a stem and leaf plot over a frequency distribution is that （）.