判斷題在定義數(shù)據(jù)結(jié)構(gòu)時，每個變量都有定義變量值標(biāo)簽。
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A cumulative frequency polygon is also called （）.
題型：單項選擇題
在組距數(shù)列中，下限就是（）
題型：單項選擇題
Which of the following statements is not true？（）
題型：單項選擇題
The number of class intervals in a frequency distribution is usually between （）.
題型：單項選擇題
一個地區(qū)一定時期的商品零售額屬于（）
題型：多項選擇題
One advantage of a stem and leaf plot over a frequency distribution is that （）.
題型：單項選擇題
A cumulative frequency distribution would provide（）.
題型：單項選擇題
Descriptive statistics deals with methods of（）
題型：單項選擇題
對全國各鐵路交通樞紐的貨運量、貨物種類等進行調(diào)查，以了解全國鐵路貨運概況。這種調(diào)查屬于（）
題型：單項選擇題
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 （）.
題型：單項選擇題