想問一下數量百題的61題。為什么題目里說的p(1
想問一下數量百題27題中,Sharpratio怎么(Rp-0)/標準差,這里的Rpweishenme是用mean?。?
有沒有志玲姐解答一下,關于求FV of growing ordinary annuity的問題:Blake is 30 years old today, and he is planning on his retirement at age 65. His currently salary is $45000 and he expects his salary to increase at a rate of 5% per year as long as he works. To save for the retirement, he plans on making annual contributions to a retirement account. His first contribution will be made on his 31st birthday and will be 8% of this year’s salary. Likewise, he expects to deposit 8% of his salary each year until he reaches age 65. Assume that the rate of interest is 7%. The future value at retirement (age 65) of his saving is closest to: a. $497,530 b.$928,902 c.$87,004 d.$1,263,236 應該用公式FV=CF1*{[(1+r)^n-(1+g)^n]/(r-g)}求么(結果為A), 還是應該單獨計算每年的ordinary annuity后求FV(結果為B)?
這個圖是什么意思
想問一下百題的24題。為什么是(n+1)而不是n乘以80%呢。我知道公式是這么寫的,但是有什么好一點的解釋嗎,方便記憶。
老師,這個題講的是什么意思?沒看明白。
單個和兩個的均值和方差假設檢驗的公式要記嗎?
計算數字輸入沒有問題,為何算出來是14.33,不知哪個地方遇到了問題。
老師這個題目用計算器算出來的結果是3591.31.n=60;i=0.5;pv=200000;fv=0,CPT-PMT計算了好幾次都是,不知道有什么問題
第6題中,4%是sample 標準差,為什么答案中還要計算一次呢?
我想問一下reading 6里面, test of independence,為什么強化班的課上說算出來的卡方分布值越大(真實數據與預期數據的差值越大),就說明size 與investment type越不獨立。請問這里面的內在邏輯是什么呀?
能不能詳細說一下呢?
標準差是S,而標準誤是S/(n^0.5),所以選項B不對啊。麻煩老師詳細講解一下。謝謝!
第二題怎么判斷是先付還是后付?
現在的經典題里面有一些沒有講到的題目,是不用看了嗎
程寶問答