【判断题】【消耗次数：1】
标准差越大，观察个体之间变异越小。
①
正确
②
错误
参考答案：
复制
纠错
相关题目
【单选题】
下列有关标准差的说法中错误的是（）。
①
样本标准差用S表示
②
标准差越大，数据的集中趋势越小
③
方差的算术平方根称为标准差
④
标准差的量纲与原变量一致
⑤
标准差越大，数据的离散趋势越大
【简答题】
估计标准差，离差值越小，反映观察点越靠近回归直线，即回归直线的代表性[填空1]。
【简答题】
什么是标准差系数？标准差系数在什么条件下使用？
随机题目
【单选题】
He didnt seem to mind_____the music while he was studying.
①
them listening
②
them to listen to
③
when she returned
④
that did she return
【单选题】
_____all the representatives still not there,the meeting was postponed for several hours.
①
Because
②
With
③
By
④
Without
【单选题】
Ive been telling you_____not to do that,but you neve listened to me.Thats why you got into trouble.
①
at times
②
time before time
③
time and again
④
for the time being
【单选题】
It seems as if the sun_____round the earth since it rises in the east and sets in the west.
①
circles
②
is circling
③
has been circling
④
were circling
【单选题】
If he_____the storekeepers scissors,he would have forgotten to buy a pair.
①
would not see
②
had not seen
③
having not seen
④
has not seen
【单选题】
It was not until she had finished all her work_____.
①
did she return
②
that she returned
③
when she returned
④
that did she return