A.0
B.1
C.-1
D.0.5
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A.眾數(shù)
B.中位數(shù)
C.極值
D.均值
A.簡單算術(shù)平均數(shù)
B.加權(quán)算術(shù)平均數(shù)
C.簡單調(diào)和平均數(shù)
D.加權(quán)調(diào)和平均數(shù)
A.兩點分布
B.二項分布
C.超幾何分布
D.泊松分布
A.9組
B.10組
C.11組
D.12組
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
最新試題
對全國各鐵路交通樞紐的貨運量、貨物種類等進行調(diào)查,以了解全國鐵路貨運概況。這種調(diào)查屬于()
A summary measure that is computed from a sample to describe a characteristic of the population is called()
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?
A cumulative frequency polygon is also called ().
品合格率指標是()
一個地區(qū)一定時期的商品零售額屬于()
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()
變量數(shù)列中,各組頻率之和應(yīng)()
The number of class intervals in a frequency distribution is usually between ().
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 ().