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  #111  
Old 01-29-2016, 12:09 PM
ActuarialJL1980 ActuarialJL1980 is offline
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can someone explain exercise 4.2 in ASM? Why does E[X^2] = (frequency*(mean^2 + Sigma^2)). Why do we add the mean squared plus sigma squared for the second moment? I've seen this a few times now and must have missed the definition.
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  #112  
Old 01-29-2016, 12:22 PM
ActurialMike ActurialMike is offline
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Originally Posted by ActuarialJL1980 View Post
can someone explain exercise 4.2 in ASM? Why does E[X^2] = (frequency*(mean^2 + Sigma^2)). Why do we add the mean squared plus sigma squared for the second moment? I've seen this a few times now and must have missed the definition.
I haven't started studying this yet so anyone is welcome to correct me but from my P days:

Variance = sigma^2 = E[X^2] - (E[X])^2

Rearranging to solve for the second moment:

E[X^2] = sigma^2 + (E[X])^2
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  #113  
Old 01-29-2016, 02:25 PM
ActuarialJL1980 ActuarialJL1980 is offline
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ah nice! Thanks for the reminder.
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  #114  
Old 01-29-2016, 03:02 PM
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Tauoverpi Tauoverpi is offline
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Originally Posted by ActurialMike View Post
I haven't started studying this yet so anyone is welcome to correct me but from my P days:

Variance = sigma^2 = E[X^2] - (E[X])^2

Rearranging to solve for the second moment:

E[X^2] = sigma^2 + (E[X])^2
hehe, this guy
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  #115  
Old 01-31-2016, 11:49 PM
zenkei18 zenkei18 is offline
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I have been trying to study but it's been difficult. I am the kind that knowing how to solve the problem and doing the practice problems becomes boring to me as it is more of a technical regurgitation nature as opposed to learning new stuff, so I am trying to go through the entire manual and summarize key concepts and formulas, then going to try my hand at some practice exams with my review notes. Then after a couple of the practice exams might go back and look at problems that seem different in applying concepts or problems I wouldn't immediately know how to solve. Seemed to work well for MFE the last go around.
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  #116  
Old 02-01-2016, 04:23 PM
el jefe el jefe is offline
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is anybody using mahler manual? I'm starting it today, but I've never used anything besides ASM and ADAPT for any other exams.
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  #117  
Old 02-01-2016, 05:59 PM
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Tauoverpi Tauoverpi is offline
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is anybody using mahler manual? I'm starting it today, but I've never used anything besides ASM and ADAPT for any other exams.
I am also using it. It was recommended by a co-worker who had used the same strategy you (and I) have used so far. She passed first try. She said, "It's A LOT of pages, but they go pretty quickly."

Hope that's useful to you, Jefe.
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  #118  
Old 02-01-2016, 10:44 PM
Doctuary Doctuary is offline
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Finally cracked down and started studying today... anyone else using TIA?
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  #119  
Old 02-02-2016, 09:15 AM
ActurialMike ActurialMike is offline
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Finally cracked down and started studying today... anyone else using TIA?
Started two days ago.
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  #120  
Old 02-02-2016, 12:45 PM
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Finally cracked down and started studying today... anyone else using TIA?
I'm in the exact same boat. Time to put the hammer down
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