一道计算题,

问题描述:

一道计算题,
11.8 ,11.7 ,12.0,12.1 ,12.3,12.2,12.0,11.5,12.3,
12.1,12.0,12.2,11.9,12.1,12.3,12.4,11.8,11.9,
求标准查!
11.8 ,11.7 ,12.0,12.1 ,12.3,12.2,12.0,11.5,12.3,
12.1,12.0,12.2,11.9,11.7,11.9,12.1,12.3,12.4,11.8,11.9,

0.232