NO.PZ2019040801000067
问题如下：
For two Monte Carlo simulations, one with 50 replications has a standard deviation of 18.6, the other with 800 relications has a standard deviation of 17.8, what are the standard error estimates for these two simulations?
选项：
N = 50
N = 800
1.12
1.85
2.34
0.14
2.63
0.63
1.264
0.214
解释：
C is correct.
考点：标准误
解析：monte carlo simulation中，标准误的计算就是用标准差除以重复次数的平方根，即：18.6/（50^0.5）= 2.63 和 17.8/（800^0.5）= 0.63
老师你好，这里已经有标准差了，为什么还需要计算标准误呢
