题目
A return series with 250 observations has a sample mean of 10% and a standard deviation of 15%. The standard error of the sample mean is closest to:
选项
A.0.06%
B.15.80%
C.0.95%
D.3.87%
答案
C
解析
「huixue_img/importSubject/1564169388637163520.png」(15%)/√250=0.95%