回答(1)
Evian, CFA2020-10-13 09:48:15
└(^o^)┘你好同学,
A difference in means test only if the variances of monthly returns are equal for the two stocks.
仅当两组月数据的方差相等时,使用“A difference in means test”
A difference in means test with pooled variances from the two samples.
使用“A difference in means test”,其中的样本的综合方差pooled variance也要考虑到。
为乘风破浪的自己【点赞】让我们知晓您对答疑服务的支持~
- 评论(1)
- 追问(0)
评论
0/1000
追答
0/1000
+上传图片
