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为了解本市居民的生活成本,甲、乙、丙三名同学利用假期分别对三个社区进行了“家庭每...
为了解本市居民的生活成本,甲、乙、丙三名同学利用假期分别对三个社区进行了“家庭每月日常消费额”的调查.他们将调查所得到的数据分别绘制成频率分布直方图(如图所示),记甲、乙、丙所调查数据的标准差分别为s
1,s
2,s
3,则它们的大小关系为
.(用“>”连接)
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123656965151908/SYS201310251236569651519009_ST/images0.png)
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