A.80%~89%，90%~99%，100%~109%，110%以上
B.80%以下，80.1%~90%，90.1%~100%，100.1%~110%
C.90%以下，90%~100%，100%~110%，110%以上
D.85%以下，85%~95%，95%~100%，105%~115%
您可能感興趣的試卷
你可能感興趣的試題
A.小于1
B.等于1
C.大于1
D.不等于1
A.普查
B.抽樣調(diào)查
C.重點(diǎn)調(diào)查
D.典型調(diào)查
A.年齡
B.學(xué)習(xí)成績
C.專業(yè)
D.個(gè)人愛好
A.是等距分組
B.第一組假定下限是0
C.相鄰組限是重疊的
D.分組標(biāo)志為連續(xù)型變量
E.某學(xué)生的成績80分應(yīng)歸在70-80這一組
A.15次方
B.16次方
C.17次方
D.18次方
最新試題
什么是季節(jié)變動？研究它的意義何在？如何測定季節(jié)變動？
對某班級學(xué)生的生活狀況進(jìn)行統(tǒng)計(jì)調(diào)查，下列標(biāo)志中屬于不變標(biāo)志的是（）
A summary measure that is computed from a sample to describe a characteristic of the population is called（）
A cumulative frequency distribution would provide（）.
要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）
Descriptive statistics deals with methods of（）
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 （）.
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). Personnel records of 50 employees are selected for analysis. (The plant employs 250.) For this study, the average number days absent for these 50 employees is a （）.
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？（）
Which of the following is not the goal of descriptive statistics?（）