Math Help

Rama

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I know gamblers are some of the smartest math people around. So hopefully, someone can help out with my math. In year 1 if I have 50 and in year 2 I have 125. I increased by 75 and 150%. (125-50)/50. The problem I can't figure out is if I have negative 50 in year 1 and 200 in year 2, I increased by 250, but by what percentage. Thanks.
 

HONUS

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the answer is N/A.

This happens in business all the time and for presentation purposes, you put "N/A" in the %B/(W) column.

Mathematically this cannot be done.
 

dawgball

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Feb 12, 2000
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I will attempt to answer your question here.

You have two different scenarios. The first being the most desirable because you have a set bankroll to bet from, so you can gauge what you win or lose.

In the second scenario, you DO have a certain value. If you lose the money, you will have to pay it. I assume that you are not presenting this to a Board of Directors for investment purposes, so you really need to be able to show yourself how much you won or lost based on your starting bankroll.

If you start the year with $50, and you lose it you have two options. 1) Quit and your yearly percentage loss is 100%. OR2) Add another $50 to your account. If you choose option 2, then you have just increased your initial bankroll to $100. So, if you end the year with $125, you increased your bankroll by 25%.

If you want to seperate this out into years, you need to examine option 1 again. You put $50 in, you lose $50 then you are done.
Year 2, you deposit another $50 in, and you increase this to $125.
Your Year 2 return is 150%, but your overall return is only 25%.

Good Luck either way, but it is very important to be honest with yourself about your winnings/losings.

I have met so many people who will sit down at a BJ table and lose $500, then go get $500 more. When they get up the second time with $600, they will say they won $100.
NO YOU DIDN'T You lost $400.

------------------
Sic 'em
dawgball
 

Rama

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Thanks guys, N/A is what I had. Just needed a second opinion.
 

djv

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Hey we got guys can nail the tough ones. Just never ask what 2 + 2 is. That we say is not a fair question. And for centuries no one has found correct answer.
smile.gif
 

katts

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The mathematical answer would be -500%, which doesn't make any sense.

Like dwagball and Skinar said, it's all about sessions. You can't start a session with < 0. If you start your session with, let's say, 250$, 250$ being the amount of money you're willing to invest in a given session (a "session" can be defined as a period of time for instance, or a # of bets, eg 6 months, or 50 bets, etc..), then you turn your 250 into 500$, you can say you doubled your bankroll (+100%).

Now if you lose the entire 250$, no need to continue this "session". You went bankrupt, so you're down -100%. You can't be down more than 100% - that's the way to see it. You then start a new session if you're willing to invest more money. As for the net profit after many sessions, that's another story and you can't really define it in terms of %.
 
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