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  1. David Harper CFA FRM

    Chi Square p value

    Hi @JLim3856 In the exam, you will not be required to "calculate" the p-value (beyond scope of a calculator). At most, you may need to interpret it or refer to an obvious p-value per header in a lookup table snippet (the exam provides a Z lookup which--I think you understand--implicitly has...
  2. David Harper CFA FRM

    How to calculate ES (P1.T4.EOC 1.17 and P1.T4.EOC 2.5)

    Hi @AUola2165 GARP is wrong on both 2.4 and 2.5. ES is a conditional average and has only one answer, ever (regardless of continuous or discrete). It has one answer for the same reason that there is always and only one sample mean for any given sample. In the case of 2.5, the 99% ES is the...
  3. David Harper CFA FRM

    Operation Risk Risk Weighted TAbles

    Hi @sulemanms202 It's really really hard (impossible?) to give a definitive answer to a virtually universal memorization question. The strict and obvious answer is: No! You definitely do not need to memorize "every single line time and detail" in all of those tables. I'll go way further: you...
  4. David Harper CFA FRM

    Forgot to select test site

    @Sixcarbs I agree. My question is, despite the language (let's stipulate that GARP has a policy and it is well-explained: I didn't read it myself but we know they are good at CYA. Their mock PQs may bit loose, but their not their CYA language). So let's stipulate that their policy was not...
  5. David Harper CFA FRM

    Forgot to select test site

    @Sixcarbs He's out $600, is what they are telling us.
  6. David Harper CFA FRM

    Forgot to select test site

    @JMars7424 absolutely, I feel for you (that's a lot of money). We will do our best ....
  7. David Harper CFA FRM

    Forgot to select test site

    Thanks @Nicole Seaman if you are sending our contact an email, can you copy me? I'm troubled by this: it's a registration fee, if no exam site was selected, how can the transaction be considered complete? Thanks David
  8. David Harper CFA FRM

    Government Bond Futures

    Hi @HPASI2304 What I wrote above is the more fundamental, relevant relationship .... ... because we hedge interest rate increases with a short position in interest rate futures. The Eurodollar futures contract typifies this because the quote price is 100 minus the rate. Or as Hull explains...
  9. David Harper CFA FRM

    Probability of mutually exclusive event

    Hi @JStir4521 Probability must be between zero and 100% inclusive such that either P(B) = zero or P(B) = 100% are allowed. If P(B) = 0%, then A and B must be be independent per the definition. That's the easier question, for me. To be honest, I struggle with the question of mutual exclusivity...
  10. David Harper CFA FRM

    Binomial Tree - Question

    Hi @TEkaz8632 i moved your query here so you can see my reply above at https://forum.bionicturtle.com/threads/binomial-tree-question.23398/post-83158 i.e.,
  11. David Harper CFA FRM

    credit spread - continuous compounding question

    Hi @mbbx5va2 It is unwise to opine without context, but in general, you can apply the typical discrete or continuous translations such that a credit spread of 3.0% per annum with annual compounding is equal to ln(1+3%) = 2.9559%. See example here from GARP mock at...
  12. David Harper CFA FRM

    Science of Term Structure- Arbitrage pricing multiple periods

    Apologies to you Goher (@gsarm1987 ): your response is the correct response here! I had this thread backlogged, and in haste, I provided the XLS. For future reference @Shau_2207 please know that he's correct: these learning XLS are part of the upgraded package. Thanks for understanding.
  13. David Harper CFA FRM

    Science of Term Structure- Arbitrage pricing multiple periods

    Hi @Shau_2207 Please see the sheet at "29.7 Three Steps" and the subsequent in the attached "P2.T5.Tuckman_Ch7_v1.4.xlsx" (also here at https://www.dropbox.com/s/4ords2u1c2l20dy/P2.T5.Tuckman_Ch7_v1.4.xlsx?dl=0)
  14. David Harper CFA FRM

    Discrete random variable and continuous random variable

    Hi @AToma4828 A cumulative distribution function (CDF) which describes a random variable is a plot of probabilities on the Y axis (from 0 to 100%) against, on the X axis, the range (aka, support) of outcomes (possible values) of the random variable. If it's a fair die, the range is {1, 2, 3, 4...
  15. David Harper CFA FRM

    Finding the standard deviation from confidence intervals

    Hi @CanvasEcho Yes, that's a mess, you are correct. The margin of error (ME) = SE * t_critical where SE = sample σ/sqrt(n) such that ME = sample σ /sqrt(n) * t_critical. Therefore, sample σ = ME/t_critical * sqrt(n) = 5.23%/2.57 * sqrt(37) = 12.379%. And we can easily just test this with 7.55%...
  16. David Harper CFA FRM

    jorion chapter 11 mapping var

    @jchun8523 Yes @yLam4028 is correct: those pairwise correlations are purely assumptions (you would not be able to derive or replicate them!). They are colored in YELLOW which in our XLS does connote input assumptions. Thanks,
  17. David Harper CFA FRM

    YouTube T5-07: Risk-neutral probabilities

    Hi @prianthar Rates should (almost) always be expressed in per annum terms; e.g. above the S(0.5) = 5.00% and S(1.0) = 5.15% are inputs and therefore they are per annum (aka, annualized). To discount discretely depends on the compound frequency and where k = the number of periods per year, the...
  18. David Harper CFA FRM

    VaR calculation for Example of the LVAR p2.t8 page 6

    Hi @prianthar Yes that is correct. In market risk (what you are calling the book), "absolute VaR" as given by aVaR = -μ + σ*z has the positive drift offsetting the unexpected loss. But in liquidity VaR (LVaR) which adds the liquidity cost--if we are incorporating spread volatility--the "worst...
  19. David Harper CFA FRM

    PLEASE READ: Publishing Process for 2023

    Hi @gregorius89 I'm not sure, I don't think that should be the case; i.e., our notes should match the current syllabus/LOS. We will take a closer look Monday, I won't have time today/Sunday (copy @Nicole Seaman ) ... Thanks, David
  20. David Harper CFA FRM

    MGRM Rollover Hedging?

    Hi @CanvasEcho MGRM Yes, that's correct. MGRM employed a stack-and-roll, as you (pretty much) show. But (to my knowledge) they never went to delivery in the futures market, which was their hedge. So, it was open the long stack, then next month "roll the stack" by closing that open position and...
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