A.演繹推理
B.完全歸納推理
C.不完全歸納推理
D.非邏輯推理
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A.總體大小
B.個體多少
C.理論范圍
D.具體范圍
A.概念
B.數(shù)值
C.概念和數(shù)值
D.數(shù)值尺度
A.單值
B.等距分組
C.異距分組
D.復(fù)合分組
A.各個個體的名稱與指標數(shù)值
B.各組變量值與次數(shù)
C.各組變量值與其方差
D.各組均值與方差
A.簡單隨機抽樣
B.系統(tǒng)抽樣
C.分層抽樣
D.整群抽樣
最新試題
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 （）.
為什么在計算平均指標的基礎(chǔ)上還有必要進一步計算變異指標？
Descriptive statistics deals with methods of（）
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）
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（）
The number of class intervals in a frequency distribution is usually between （）.
變量數(shù)列中，各組頻率之和應(yīng)（）
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 （）.
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？（）
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（）