R平方的公式中，SSE+RSS=SST，根据SSE,RSS和SST的公式，这个等式好像不成立吧？

老师，请问每单位的可变成本是什么意思？

onsidering the following statement: "Use of P/E and other multiples for analysis is not effective because the multiples are based on historical data and because not all companies have positive accounting earnings." Which of the following is the correct description of the statement? A Inaccurate with respect to both historical data and earnings. B Accurate with respect to historical data and inaccurate with respect to earnings. C Inaccurate with respect to historical data and accurate with respect to earnings.

Data of AAA Corporation for the years 2005 to 2008. As of the date of the valuation in 2009, the forward-looking twelve-month P/E, P/CF, and P/S are, respectively, 9.6, 7.7, and 3.5. Based on the information provided, the analyst may reasonably conclude that AAA shares are most likely: 为什么是被高估的？从2009的三个数据，有点不理解

reading24最后一个部分介绍equity investment style classification. 请问为什么要把equity investment 按照style做分类呢？用途是什么呢？跟整个投资流程没什么关系吧，为了整个行业管理？

为什么每个视频都打不开呢？

请问EPS是什么意思？

请问EBIT是什么意思？

什么是对数标准化

请问这个表上分别代表什么意思？