问题如下图:
选项:
A.
B.
C.
解释:
你好老师问一下这里面解答说的 sample mean 会下降为什么呢?
sample size crease stanrerror is increase A is correct, the accuraof the parameter estimate increase the sample size increase, the stanrerror of the sample mefalls, anstanrviation also crease.能翻一下题目的意思吗?
sample size crease stanrerror is increase A is correct, the accuraof the parameter estimate increase the sample size increase, the stanrerror of the sample mefalls, anstanrviation also crease.老师、请问总体特征不是用parameter吗?这里表示的是总体的标准误?不是应该是样本的标准误吗 of statistic 吗?
标准误的英文概念是什么? 这题不是应该还有一个变量不变,才能推出吧,题条件没说全?
老师这道题目出错了吗?标准方差减少,只能推出标准误减少,但不能推出样本量是增加还是减少了呀,麻烦下这道题的意思,谢谢!