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如果一组数x1,x2,…,xn的平均数是,方差是s2,则另一组数的平均数和方差分...
如果一组数x
1,x
2,…,x
n的平均数是
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231355011906261/SYS201311012313550119062009_ST/0.png)
,方差是s
2,则另一组数
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231355011906261/SYS201311012313550119062009_ST/1.png)
的平均数和方差分别是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231355011906261/SYS201311012313550119062009_ST/2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231355011906261/SYS201311012313550119062009_ST/3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231355011906261/SYS201311012313550119062009_ST/4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101231355011906261/SYS201311012313550119062009_ST/5.png)
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