-
AuthorPosts
-
-
When we find excess kurtosis, we need the exponent 4 of the deviations from the mean.
But we also need the standard deviation s (wich uses exponent 2 of the deviations from the mean).
Is there a quick way of going from Sum(Deviations)^4 –> the squared version (which can then be used in the stdev) ??Like on page 386 of CFAI book 1, they do the ^4 long business, and then they just say what s is, so I’m wondering if there was a shortcut, because I seem to only be able to get s by restarting the whole squaring process… :S
-
-
-
-
-
-
-
-
-
Imo you just need to know the interpretation of Kurtosis, not calculate it.
My CFA instructor at EduPristine told that in theory CFA L1 should be passable without the use of a calculator.
I have known people who have walked into the exam without calculators, so yes, that is true. However wouldn’t recommend it! 😉
-
-
AuthorPosts
- You must be logged in to reply to this topic.