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.
2ND按7输入统计数据时,遇到重复的X值,Y值能否输入X值的重复个数?例如:此题中有两个12%,X值输入12,Y值输入2,这样计算出来的总体方差是8.51...