A.提高
B.下降
C.不變
D.條件不夠,無法判斷
您可能感興趣的試卷
你可能感興趣的試題
A.每個組的最小值
B.每個組的最大值
C.全距中的最大值
D.全距中的最小值
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%
A.小于1
B.等于1
C.大于1
D.不等于1
A.普查
B.抽樣調查
C.重點調查
D.典型調查
A.年齡
B.學習成績
C.專業(yè)
D.個人愛好
最新試題
如果居民按報告期價格購買商品需多支出40萬元,報告期商品銷售額為200萬元,則價格指數為()
某廠某年職工勞動生產率為20000元,是歷史最高水平的1.2倍。這里的1.2倍是()
為什么在計算平均指標的基礎上還有必要進一步計算變異指標?
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). 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 ().
A cumulative frequency distribution would provide().
在組距數列中,下限就是()
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 cumulative frequency of the third class?()
企業(yè)生產一種產品需順次經過四個車間,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)生產這種產品的平均廢品率是多少?