

FlashChat  Actuarial Discussion  Preliminary Exams  CAS/SOA Exams  Cyberchat  Around the World  Suggestions 
Entry Level 
DW Simpson
& Co. 
Casualty Jobs 
Salary Surveys 

Thread Tools  Display Modes 
#1




Method of Equated Time
Does anybody remember the formula for the Method of Equated Time?
I saw 3 questions that used this in the ASM Manual.. 
#2




sum of (payments*time of payment)/total of payments.
like like MacD without the v terms. 
#3




Oh thanks,
Now their was another formula i was looking for...and i can't remember what its called. Its like the method of equated time but for bonds.... (maybe this doesn't exist and i need some sleep) 
#6




yea yea thats the one
what is the bond salesman formula? 
#7




(nFrC+P) / (n/2)*(C+P)

#8




That's not quite right (cf. below).
It seems as if the entire world would like you to believe that this formula is mysterious and difficult to remember but it's actually neither. The bond salesman's method is a truly beautiful formula. Just remember the following: the yield to maturity on a bond is approximately the average amount of interest earned divided by the average amount invested. If you believe and grok that statement then you now understand everything there is to say about the bond salesman's method. How do we get from that interpretation to the above formula? The average amount of interest earned is the total interest earned divided by the number of periods. The (undiscounted) total interest earned is the sum of the coupons plus the difference between the redemption value and the price of the bond; in symbols this is and therefore the average amount of interest earned is . The average amount invested is simply the average of the redemption value and the price of the bond, namely . There ratio of these two is the bond salesman's method, namely . 
#9




i
Quote:

#10




Neither of these (method of equated time or bond salesman's formula) are on the syllabus anymore.

Thread Tools  
Display Modes  

