A.9組
B.10組
C.11組
D.12組
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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
A.總體大小
B.個(gè)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(gè)個(gè)體的名稱與指標(biāo)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
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？（）
什么是季節(jié)變動(dòng)？研究它的意義何在？如何測(cè)定季節(jié)變動(dòng)？
最能反映離散程度的指標(biāo)是（）
以2000年a0為最初水平，2016年an為最末水平，計(jì)算鋼產(chǎn)量的年平均發(fā)展速度時(shí)，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 cumulative frequency of the third class？（）
品合格率指標(biāo)是（）
The number of class intervals in a frequency distribution is usually between （）.
某班的學(xué)習(xí)按考試成績(jī)分為60分以下，60-70，70-80，80-90，90-100，這種分組（）
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）
A cumulative frequency polygon is also called （）.