那些公式簡寫是在哪一章？ESS，RSS，R平方
Ess是什么意思
這里的F-test與t-test在哪節(jié)課啊，之前的視頻都沒看到
老師這個推導能詳細分析一下嗎
老師 LN(117.94/100) =0.165, 這里為啥要除100
老師這道題為什么和官網(wǎng)不一樣，官網(wǎng)是：A quantitative analyst at a proprietary trading firm is incorporating unsupervised machine learning (ML) algorithms into the firm’s technical analysis of equities by using K-means clustering. The clustering algorithm will be applied to continuous volatility data in order to group observations into clusters that can be used to identify the current market regime. Since clusters close to each other are likely to exhibit similar characteristics, the analyst measures the distances between the observations within each cluster and the centroid of that cluster. If the analyst wants to ensure that the minimum distance is obtained for the continuous data clusters when applying the K-means algorithm, which measure should be used to achieve the desired outcome? A.Euclidean distance B.Manhattan distance C.Cook’s distance D.Gini measure麻煩解答一下
老師可以舉一個計算kurtosis的例子嗎，想看一下計算過程，就是用這個公式怎么計算
這老師為啥還邊給別的學生互動變講課，花錢買這個課能不能搞的專業(yè)點??？
什么時候左偏什么時候右偏呢
pearson相關的知識點不記得了，麻煩老師講講
能不能詳細計算下V[X]、V[Y]、E[XY]，自己算出來小數(shù)點有偏差，還有講義d問里面表格里面Normalized數(shù)值是怎么算的
為什么兩個本來都是normal但混合了就不是了？
交叉驗證在基礎課講義的哪個部分？
為什么排序相關系數(shù)只能描述單調(diào)的非線性關系？
可以這樣理解嗎？AR模型是今天的數(shù)據(jù)只和昨天的數(shù)據(jù)有關，MA模型是今天的數(shù)據(jù)受到之前的誤差的影響，ARMA是兩者的結合？
程寶問答
金程問答
