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 Probability Old Exam P Forum

#11
02-27-2007, 10:27 AM
 Proctor Note Contributor SOA Join Date: Nov 2006 Studying for Exam C Posts: 19

It's not the most beautiful set of formulas ever, but it got the job done.
Attached Files
 RV table.doc (56.5 KB, 6853 views)
#12
03-04-2007, 09:30 PM
 jindalily Member Join Date: Feb 2007 Posts: 62

For those of you that don't have MS word, merry christmas.

I have some shortcuts which I believe will help a lot of people. I'll get it down on paper and share it sometime.
#13
05-18-2007, 08:58 PM
 aminesky Note Contributor SOA Join Date: May 2007 Location: Montreal, Canada Studying for FA Posts: 62

Here's a summary that might be helpful.

aminesky
Attached Images
 Distributions%20Summary.pdf (31.8 KB, 8308 views)
#14
07-19-2007, 02:25 PM
 lgilbert CAS Join Date: Jun 2007 Location: Atlanta, GA Studying for 8 College: University of South Carolina Alum Posts: 11

This site by elias saab really helped me. I gives you a randomly generated practice exam of whatever length you want!

http://www.saab.org/actuarial.cgi
#15
07-19-2007, 03:07 PM
 volva yet Note Contributor Join Date: Feb 2006 Location: Nomadic Studying for GHC/DMAC College: PSU '07 Favorite beer: Oskar Blues Old Chub Scotch Ale Posts: 4,948

Typed up this past spring for convenience...
Attached Files
 SOA 123 Answer Sheet.doc (93.5 KB, 4380 views)
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How to explain actuarial exams to someone else...

Good Einstein quote - "One had to cram all this stuff into one's mind for the examinations, whether one liked it or not. This coercion had such a deterring effect on me that, after I had passed the final examination, I found the consideration of any scientific problems distasteful to me for an entire year."
#16
07-20-2007, 11:33 AM
 Groms14 Join Date: Jul 2007 Location: Omaha, Nebraska Studying for MFE Favorite beer: Boulevard Posts: 21

thank you very much for putting these on christian. great notes.
#17
09-20-2007, 04:01 PM
 bmifsud Member SOA Join Date: Jun 2007 Location: NYC Studying for C College: University of Nebraska Favorite beer: water Posts: 44

yeah thanks a lot christian
#18
10-06-2007, 11:54 PM
 booyaolian Member Join Date: Feb 2007 Posts: 144

christian's notes has typos other than those mentioned above. for example, chebyshev's inequality. please double check with your study manual.
#19
12-12-2007, 05:00 PM
 J_Mo Member SOA Join Date: May 2007 Location: Iowa Studying for Exam C College: Wartburg College (Alumni) Favorite beer: Shiner Bock Posts: 237
My notes

Here are my notes, somewhat a work in progress as I ran way short on time studying and needed to put more time into practice problems than writing notes. Since I received a preliminary pass, I don't plan to go back and complete the task (unless something happened and the result changes when I get my official grade slip), but feel free to change/update for your own needs.

One note: My notation on the Exponential Distribution may be different than what you normally see. I tried the BPP Study Program and they use the notation style f(x) = 1/θ ∙ e^(-1/θ ∙ x) I have seen other places use the notation f(x) = λ∙ e^(-λ∙ x) I don't know if it is because BPP is more of a British firm or what, but I noticed the different notation when I borrowed a co-worker's ACTEX manual to take the practice exams.  I noticed a similar difference with the Gamma Distribution as well the key being λ = 1/θ in both situations.

GOOD LUCK ALL!
Attached Files
 Continuous Distributions.doc (104.5 KB, 5436 views) Moments.doc (49.0 KB, 4531 views) Discrete Distributions.doc (67.0 KB, 5782 views) Joint Distributions.doc (66.5 KB, 4135 views) Key Review Formulas.doc (189.0 KB, 5540 views)
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Last edited by J_Mo; 12-12-2007 at 05:06 PM.. Reason: additional information noted
#20
12-12-2007, 05:21 PM
 Actuarialsuck Member Join Date: Sep 2007 Posts: 6,145

Is it proper to say that $f(x) \, = \, Pr(X = x) \, = \, \frac{1}{\theta} e^{-\frac{x}{\theta}}$ ? (just picking on the exponential dist.) Certainly true for discrete dist. but as far as cont. ones go, Pr(X = x) = 0.

Also your formula in the Key Review Formulas for (a+b+c)^2 is incorrect, it is certainly not a + b + c + 2ab + 2bc + 2ac

The sum of n consecutive integers is not $\frac{n(n-1)}{2}$, it is $\frac{n(n+1)}{2}$

Last edited by Actuarialsuck; 12-12-2007 at 05:25 PM..