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> 镇政府想了解李家庄的经济情况,用简单随机抽样的方法,在130户家庭中抽取20户调查过去一年收入(单位:万元),结果如下:1.31.72.41.11.41.61.62.72.11.50.93.21.-七
镇政府想了解李家庄的经济情况,用简单随机抽样的方法,在130户家庭中抽取20户调查过去一年收入(单位:万元),结果如下:1.31.72.41.11.41.61.62.72.11.50.93.21.-七
题目简介
镇政府想了解李家庄的经济情况,用简单随机抽样的方法,在130户家庭中抽取20户调查过去一年收入(单位:万元),结果如下:1.31.72.41.11.41.61.62.72.11.50.93.21.-七
题目详情
镇政府想了解李家庄的经济情况,用简单随机抽样的方法, 在130 户家庭中抽取20 户调查过去一年收入( 单位:万元),结果如下:
1.3 1.7 2.4 1.1 1.4 1.6 1.6 2.7 2.1 1.50.9 3.2 1.3 2.1 2.6 2.1 1.0 1.8 2.2 1.8
试估计村中住户的户平均年收入、整村的年收入以及村中户年收入超过1.5万元的百分比
。
题型:解答题
难度:中档
来源:同步题
答案
解: 住户平均年收入为
(万元)
整村的总收入为
(万元)
村中户年收入超过
万元占百分比为
上一篇 :
某家庭搬进新居后又添置了新的
下一篇 :
____ can be seen in the cha
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题目简介
镇政府想了解李家庄的经济情况,用简单随机抽样的方法,在130户家庭中抽取20户调查过去一年收入(单位:万元),结果如下:1.31.72.41.11.41.61.62.72.11.50.93.21.-七
题目详情
1.3 1.7 2.4 1.1 1.4 1.6 1.6 2.7 2.1 1.50.9 3.2 1.3 2.1 2.6 2.1 1.0 1.8 2.2 1.8
试估计村中住户的户平均年收入、整村的年收入以及村中户年收入超过1.5万元的百分比。
答案
整村的总收入为
村中户年收入超过