已知有一组数据:21,20,20,21,23,22,22,22,21,22,20,23,22,23,22,19,22,23,24,22,19,22,21,21,21,22,22,24,22,21,22,21,22,23,22,22,21,22,22,23,22,23,22,22,22,23,23,22,21,22,试用Excel求其标准差为( )。
选项:
A:1.063
B:1.459
C:1.769
D:2.032
发布时间:2024-04-11 21:44:02