A.年齡
B.學(xué)習(xí)成績
C.專業(yè)
D.個人愛好
您可能感興趣的試卷
你可能感興趣的試題
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
A.1.2
B.0.8
C.1.25
D.0.83
A.比例相對指標(biāo)
B.結(jié)構(gòu)相對指標(biāo)
C.比較相對指標(biāo)
D.強度相對指標(biāo)
A.比例相對數(shù)
B.計劃完成相對數(shù)
C.強度相對數(shù)
D.動態(tài)相對數(shù)
最新試題
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？（）
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（）
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（）
Which of the following is not the goal of descriptive statistics?（）
為什么在計算平均指標(biāo)的基礎(chǔ)上還有必要進(jìn)一步計算變異指標(biāo)？
One rule that must always be followed in constructing frequency distributions is that （）.
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 （）.
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 （）.
常用的長期趨勢測定的方法有哪些？各有什么特點？