问题如下:
Using the information in the following table, the sample standard deviation for VWIGX is closest to:
选项:
A.6.02%
12.04%.
24.54%
解释:
C is correct. The sample variance is defined as sum of the squared deviations from the sample mean divided by the sample size minus one, and the sample standard deviation equals the square root of the sample variance.
The sample variance is thus equals to 6.02. The square root of the sample variance is the sample standard deviation and equals to 24.54%.
A is incorrect because it is the sample variance for VWGIX, not its sample standard deviation.
B is incorrect because it represents the sum of the squared deviations from the mean, not the sample standard deviation.
老师好我看此题有个1个月前的问题是关于图表显示不出来。到现在了好像还未解决哈,真希望技术人员能再给点力啊。