变量的各个取值离差平方的平均数的平方根,称为( )
A.全距
B.平均差
C.标准差
D.四分位全距
正确答案是C
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。
本文链接:https://doc.20230611.cn/post/75838.html
上一篇:儿童体格发育的速度是呈阶梯状上升的。( )
下一篇:Passage 3For some time past it has been widely accepted that babies - and other creatures - learn to do things because certain acts lead to “rewards”; and there is no reason to doubt that this is true. But it also used to be widely believed that