【判断题】【消耗次数：1】
统计总体必须具备少量性、同质性和变异性三大特征。
①
正确
②
错误
参考答案：
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相关题目
【单选题】
统计总体的同质性是指
①
总体各单位具有某一共同的品质标志或数量标志
②
总体各单位具有某一共同的品质标志属性或数量标志值
③
总体各单位具有若干互不相同的品质标志或数量标志
④
总体各单位具有若干互不相同的品质标志属性或数量标志值
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土是岩石经过风化、剥蚀、搬运、沉积等作用所生成的松散堆积物，其形成过程决定了土具有碎散性、多相性及自然变异性的特点，其中（ ）属于自然变异性。
①
各向同性
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均匀性
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非结构性
④
时空变异性
随机题目
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add
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add to
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calculate on
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In Africa, educational costs are very low for those who are ____ enough to get into universities.
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ambitious
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fortunate
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substantial
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There were some ____ flowers on the table.
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artificial
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unnatural
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false
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unreal
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This is the nurse who ____ to me when I was ill in hospital.
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accompanied
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entertained
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shielded
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extended
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amounted
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Because women often ____ their diet to control weight, they may not consume enough iron-rich food, and are liable to experience a deficiency.
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【单选题】
He was such a ____ speaker that he held our attention every minute of the three-hour lecture.
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specific
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dynamic
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heroic
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are the most common three means
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are the most three common means
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are the three most common means
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are three the most common means
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He tried to _______relations with his former wife but he failed.
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measure
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shelter
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