Module 7-書(2022-L1V1)P447-最后一段中的These residuals are correlated, specifically jumping up in Quarter 4 and then falling back the subsequent quarter. 這句話所描述的與Exhibit 16不是一致的?Exhibit 16說的是1-3 quarters以及4th quarter?
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課中老師說投資者更喜歡positive skew,因?yàn)閛utliers都是驚喜。但是為什么不是negative skew呢,negative skew里面大多數(shù)都是gain more呀
Module 5-官網(wǎng)習(xí)題-Question 32- 通過題目中給出的表格,是無法找到Z0.05=1.96的?
本題第一句“。。。。。from now ", 不是從現(xiàn)在開始支付的意思嗎?
老師,請問 Reliability factor怎么理解?如何取得呢?
Module 6-書P410-Practice Problems-Question 16-為什么不是經(jīng)濟(jì)上顯著的?t值大于critical value, 所以拒絕原假設(shè),那么說明after considering trading costs, the strategy's return is not zero. 如果等于0是經(jīng)濟(jì)上不顯著的話,那么不等于0就是經(jīng)紀(jì)上顯著的?
書(2022-L1V1)P405-Exhibit 29-Panel B表格中的數(shù)據(jù)是怎么得出的?
Module 6-Example 12-答疑題目,請見截圖
書(2022-L1V1-P387)-Example 11-Exhibit 18中的standard deviation difference = 0.3622, 這個數(shù)字怎么得出的?
1.書(2022-L1V1)P378-Example 7-Solution to 1-Step 4中所寫的reject the null if the calculated t-statistic is less than -2.069 and greater than +2.069. 這句話中,less than -2.069 and greater than +2.069是兩側(cè)的拒絕域,當(dāng)中區(qū)間(-2.069,+2.069)是非拒絕域?這與Example 5 Solution中所說的Rejection of the null hypothesis requires that the p-value be less than the level of significance.不是同一個知識點(diǎn)? 2.Solution to 2所寫的The 95% confidence interval is X拔± Critical value (s/根號下n ),如截圖1所示,這個公式在書上第幾頁上有? 3.Solution to 2所寫的The hypothesized value of 1.1% is within the bounds of the 95% confidence interval,指的是1.1%落在{? 0.0204, 3.0204 }這個區(qū)間內(nèi)?
老師,重抽樣里哪個方法是without placement
請問如果是有顏色區(qū)分的話,那是四維嗎?
這里的r是什么?
程寶問答