A.抽簽法
B.搖獎法
C.配對法
D.配額法
E.隨機數(shù)表法
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A.實際經(jīng)濟增長率
B.通貨膨脹率
C.失業(yè)率
D.痛苦指數(shù)
A.取值都在0與1之間
B.均值為0
C.均值為1
D.標準差為1
A.2％
B.0.5％
C.5％
D.4.8％
A.總指數(shù)大于所有的個體指數(shù)
B.總指數(shù)小于所有的個體指數(shù)
C.總指數(shù)介于個體指數(shù)的最大值與最小值之間
D.上述三種情況都可能發(fā)生
A.基期價格
B.現(xiàn)期價格
C.基期銷售量
D.現(xiàn)期銷售量
最新試題
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（）
最能反映離散程度的指標是（）
The number of class intervals in a frequency distribution is usually between （）.
The number of phone calls arriving at a switchboard each hour has been recorded and the following frequency distribution has been developed.What is the approximate range of the number of phone calls arriving each hour？（）
品合格率指標是（）
要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）
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 not the goal of descriptive statistics?（）
If data are grouped into intervals and the number of items in each group is listed, this could be called a （）
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過四個車間，這四個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？