[一級定量分析] 老師，這道題我怎么算都得A啊，哪里錯了嗎

An analyst is studying a stock that is currently trading at $35. The analyst estimates that there is 33% probability that the stock will trade at $50 after one year a 20% probability that the stock will trade at $42 and a 47% probability that the stock will trade at $20. What is the volatility of this stock price? A. 13% B. 24% C. 31% D. 39% Answer: D

2019-09-20 16:45:351回答

[一級定量分析] B，C為什么是對的

2019-09-20 15:39:171回答

[一級定量分析] B和D可以解釋一下嘛

2019-09-20 15:38:131回答

[一級定量分析] 為什么選EWMA？

2019-09-20 15:25:201回答

[一級風(fēng)險管理基礎(chǔ)] 這個D選項最后一句，要最高的votility那邊說的是什么意思？還有C選項中三個不相關(guān)產(chǎn)業(yè)關(guān)聯(lián)性那么高為啥也不是failure

2019-09-20 10:10:261回答

[一級定量分析] 老師，3為什么是對的呀？一類錯誤應(yīng)該是拒絕原假設(shè)是真的

2019-09-19 23:10:341回答

[一級定量分析] 老師，像這種到時候都會標(biāo)出來是多少嗎

2019-09-19 21:51:131回答

[一級風(fēng)險管理基礎(chǔ)] 老師，請問這道題A哪兒錯了

Melody Li is a junior risk analyst who has recently prepared a report on the advantages and disadvantages of hedging risk exposures. An excerpt from her report contains four statements. Which of Li’s statement is correct? A. Purchasing an insurance policy is an example of hedging. B. In practice hedging with derivatives is not likely to be a zero-sum game. C. The existence of significant costs of financial distress and bankruptcy is considered within the assumption of perfect capital markets. D. Hedging with derivatives is advantageous in the sense that there is often the ability to avoid numerous disclosure requirements compared with other financial instruments.

2019-09-19 18:12:161回答

[一級定量分析] 用平方根法則以后就不知道怎么做了

2019-09-19 15:52:471回答

[一級定量分析] 標(biāo)準(zhǔn)化后 是應(yīng)該N（-0.25）-N（-0.5）嘛

2019-09-19 15:51:131回答