题目内容

向下累计是将各组次数或频率从变量值小的组向变量值大的组进行累计。 ()

A. 正确
B. 错误

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对履行了法定的审批或者备案程序并标明法定标识的统计调查表,有关统计调查对象有义务如实填报。 ()

A. 正确
B. 错误

A.It is a serious threat to its competitors.B.It is not powerful enough to affect the

A. It is a serious threat to its competitors.
B. It is not powerful enough to affect the world market.
C. The ears' quality is good enough to have their own branding.
D. None of the Chinese cars meet the standard in the US.

简单算数平均数是加权算数平均数的—个特例,是权数相等条件下的加权算数坪均数。()

A. 正确
B. 错误

按照统计分组要具备完整性的原则,对婚姻状况进行调查时,应当将总体划分为未婚和已婚两个组。 ()

A. 正确
B. 错误

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