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cubedbee
10-21-2003, 04:33 PM
Has anyone used the C4 Formula Summary found in the Downloads section (http://actuary.ca/mod.php?mod=fileman&menu=9)? It looks like a pretty good resource, even if it's not totally current. I just discovered it today, having already compiled my own list and memorized most of that junk. I bet it was a lot of work typing that all out, so I hope someone is getting use of it.
That Goblin
10-21-2003, 05:45 PM
I am someone getting use out of this item, as of about 5 minutes ago!
bluedemon74
10-24-2003, 06:47 PM
Oh man oh man thank you for that.
That Goblin
10-24-2003, 07:19 PM
Where would I be w/out you guys? Still taking Course 2, that's where!
VernSchil
10-24-2003, 09:20 PM
Thanks for the reminder as that formula list is extremely useful. When I first joined this board way back after taking Course 1, I reminded myself when(if) I got to C4 to check out those DL's. But of course, I had completely forgotten.
Cynic
10-24-2003, 09:27 PM
At least you planned far ahead. With a little more effort you'll make a great actuary. :)
dumber
10-25-2003, 01:58 PM
What is missing on the formula list???
VernSchil
10-25-2003, 02:50 PM
Quickly looking through it, I noticed seasonal adjustment of time series was missing along with some of the more obsure tests found in the econometrics book (White, Brasuch-Pagan).
archie1112
10-25-2003, 05:04 PM
It also doesn't give any info on classical credibility, and has a couple of key typos in formulas. Log-transformed confidence intervals was one that jumped off the page at me (denominator should be ln S(t)*S(t), not just ln S(t))
glenn
10-25-2003, 05:11 PM
Well, we need someone to send me a list of corrections. Scroll up to see the the current list of volunteers.
1695814
10-25-2003, 05:13 PM
It also doesn't give any info on classical credibility, and has a couple of key typos in formulas. Log-transformed confidence intervals was one that jumped off the page at me (denominator should be ln S(t)*S(t), not just ln S(t))

That's not really a typo, imo, just a change in syllabus.
See Mr Weishaus' reply in http://www.actuary.ca/phpBB/viewtopic.php?t=18371
That Goblin
10-25-2003, 08:29 PM
Well, we need someone to send me a list of corrections. Scroll up to see the the current list of volunteers.

Would the volunteer get a RF mug?
ITR
10-25-2003, 09:02 PM
...has a couple of key typos in formulas...

Can you (or someone) please tell me what are the typos? I had been using it for a few months and didn't come across any typos?

PS: As someone else mentioned earlier, the log-transform interval formula is right.
Ninjuary
10-25-2003, 09:26 PM
I think he said that the formula in the download is based on the old text which defines sigma as the standard deviation divided by S(t). The new text defines sigma as just the standard deviation, so the formula should include the S(t) term in the denominator.