金程問(wèn)答Module 7-Practice Problems-Question 29-(1)比如這題的A,B選項(xiàng),問(wèn)的是whether is less than or equal to 某個(gè)值,那么原假設(shè)應(yīng)該怎么設(shè)?我的理解是:A選項(xiàng),原假設(shè) slope>0.15, 備擇假設(shè)slope<=0.15, 計(jì)算得出的t=1.1237小于critical value2.441, 即無(wú)法拒絕原假設(shè),所以是備擇假設(shè)slope <=0.15, 那么A應(yīng)該是對(duì)的?(2)B選項(xiàng),檢驗(yàn)的是intercept的coefficient? coefficient即slope?參照書(2022-L1V1)P458 Exhibit 26而不是Exhibit 27? 書(2022-L1V1)上公式17-Hypothesis tests of the intercept與公式15-Hypothesis tests of the slope coefficient之間的用法區(qū)別是?
老師好,我明白i/y=6/4,但是我分不清什么時(shí)候用EAR,我把EAR算出來(lái)是6.14%是否可以帶回到I/Y里面去
Module 7-書(2022-L1V1)P440-Exhibit 7中的εi,為什么是0,沒有數(shù)字的?根據(jù)書P435的定義,error term εi,代表 represents the difference between the observed value of Y and that expected from the true underlying population relation between Y and X. 這道題中,從哪部分信息,可以得出εi=0?
既然兩個(gè)都是后付年金的話第一筆年金的fv不是應(yīng)該復(fù)利一年才等于第二個(gè)年金的pv嗎
老師,能把indicator variable的課件截圖給我嗎?我在數(shù)量的課件里找不到了。
http://www.h8045.cn/squareques/id_784273.html 答復(fù)說(shuō)我的紅色推倒部分粗心了,您再看一下
Module 1-官網(wǎng)習(xí)題-第30題-(1)請(qǐng)問(wèn)答案中所寫的兩個(gè)步驟:N = 25; I/Y = 6%; PMT = €80,000; Future value (FV) = €0; Mode = End. 計(jì)算PV. 以及 I/Y = 6%; PV = €0; PMT = ?€6,608; FV = €1,022,668; Mode = End. 計(jì)算N. ----這兩個(gè)步驟中,為什么前一個(gè)PMT是正數(shù)(€80,000)?后一個(gè)PMT是負(fù)數(shù)(?€6,608)?怎么判斷PMT的正負(fù)號(hào)?另外,為什么步驟1中的FV=0, 步驟2中的PV=0?不太好理解這種類型的題目,能否整體厘一下思路?(2)這道題,和教材上哪一道例題最為相似?
我沒理解這里的deviation from the target 2%,F(xiàn)eburary,june,sepetember不都比 2%小么?3%那個(gè)target的目標(biāo) 我算不出來(lái),可能是因?yàn)閿?shù)據(jù)選的不對(duì)
教材265-Module 4-Example 7-(1)Solution to 3 中,為什么P(RB < 3.75) = N(?0.90625)?第2問(wèn)答案中計(jì)算得出的Allocation B難道不是正數(shù),正的0.90625嗎?為什么Solution to 3中寫的卻是N(?0.90625)?(2)solution to 3從第4行開始所陳述的,Using a spreadsheet function for the standard normal cdf on ?0.90625 without rounding, we get 0.182402, or about 18.2%. 請(qǐng)問(wèn)0.182402是怎么計(jì)算得出的?(3) solution to 3的圖表中,分布曲線左側(cè)的面積為3.75%,是指哪塊區(qū)域?(4)solution to 3所陳述的if meeting the 3.75% return threshold were a necessity rather than a wish, C$830,000 in one year could be modeled as a liability. 請(qǐng)問(wèn)怎么理解?
教材P256最后一段從第三行開始(截圖1),以及P257-Exhibit 9(截圖2),沒有明白Exhibit 9中Panel A和Panel B的關(guān)系。請(qǐng)問(wèn)以下這句話怎么理解?The cumulative distribution function, depicted in Panel B, in fact plots the size of the shaded areas of the pdfs. 請(qǐng)問(wèn)以下這部分的另一句話,怎么理解?Let's take a look at the third row: In Panel A, we have shaded the bell curve up to x = 0, the mean of the standard normal distribution. This shaded area corresponds to 50% in the cdf graph, as seen in Panel B, meaning that 50% of the observations of a normally distributed random variable would be equal or less than the mean.
精 老師,A選項(xiàng)什么意思
b選項(xiàng)能解釋下是什么意思嘛?不懂b為什么錯(cuò)
題目里說(shuō)annualrate是3%,那不就是每年要付利息,那PMT為什么是0???
靠,這個(gè)題也太坑了,用金融計(jì)算器算A選項(xiàng)給我的就是0.618。沒想到出來(lái)個(gè)B選項(xiàng)是0.6180而不是A選項(xiàng)的0.6183
這題不對(duì)吧,既然是FV=0的情況下,出題的時(shí)候PV和PMT怎么能是符號(hào)相同的呢?應(yīng)該有正負(fù)區(qū)分吧,題給我讀懵了
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