NO.PZ2015120604000050
问题如下:
The table below shows the monthly stock returns of Ivy Corp.
According to the above table , calculate the population standard deviation for Ivy Corp. returns, assuming the population has 6 observations?
选项:
A. 8.78%.
B. 8.01%.
C. 48.06%.
解释:
B is correct
Population variance is 64.2 as calculated in previous question, thus population standard deviation is 8.01, the square root of 64.2.
没搞明白absolute deviation, standard deviation, variation的区别和联系,希望老师能用这道题里的这组数据分别求一下这些值,不胜感谢!