A.15次方
B.16次方
C.17次方
D.18次方
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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(qiáng)度相對指標(biāo)
A.比例相對數(shù)
B.計劃完成相對數(shù)
C.強(qiáng)度相對數(shù)
D.動態(tài)相對數(shù)
最新試題
在組距數(shù)列中，下限就是（）
某班的學(xué)習(xí)按考試成績分為60分以下，60-70，70-80，80-90，90-100，這種分組（）
A cumulative frequency distribution would provide（）.
Which of the following is not the goal of descriptive statistics?（）
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）
以2000年a0為最初水平，2016年an為最末水平，計算鋼產(chǎn)量的年平均發(fā)展速度時，須開（）
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 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 （）.
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？
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 （）.