Calculate ROI manualy - Beginning Poker Questions

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Calculate ROI manualy

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09-14-2018 , 12:06 PM

tucanroman

grinder

Join Date: Mar 2017 Posts: 434

Hello 2+2, little question. I am needing to calculate my ROI by myself because I need to do it from 2 different bankrolls.

I tried this: https://www.calkoo.com/es/retorno-de-la-inversion-roi

But it doesn't seem to work. I played 111 3,5 STTs at PS with -20% ROI. I played 2 $3 STTs at 888 with 500% ROI

When I add investment of 111x3,5(PS) + 6(888). And put my profits of -67.xx it gives me -135. ROI. But PS itself is -20% ROI on HM2. and 888 has positive profits

How do I calculate it properly?? thanks a lot

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09-14-2018 , 01:27 PM

sixfour

should be called sevenfour

Join Date: Dec 2005 Posts: 74,751

So you lost 70 cents 111 times and won $15 twice for a - $47.70 return. Your investment was $3.50 111 times and $3 twice, which is an $394.50 investment, so as I've run out of room in the back of the *** packet is about -12%

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09-14-2018 , 01:28 PM

Kurn, son of Mogh

Carpal \'Tunnel

Join Date: Sep 2002 Posts: 16,232

Are you forgetting to add the rake to your investment?

In other words, are the PS 3.5 STTs, 3.25 + 0.25 or are they something like 3.5 + 0.35?

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09-14-2018 , 01:28 PM

ArtyMcFly

Carpal \'Tunnel

Join Date: Dec 2014 Posts: 13,256

ROI% = (Total cashes minus total buyins)/total buyins, or net profit (or loss) divided by total buyins.

So (for example) if you paid $400 in buyins, and cashed for $333, your ROI would be (333-400)/400 = minus 16.75%

The big ROI on 888 is barely gonna dent your overall number, because you apparently only played 2 games on that site and they were at a slightly lower buy-in anyway.

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09-14-2018 , 01:43 PM

statmanhal

Pooh-Bah

Join Date: Jan 2009 Posts: 4,987

You invested 388.5 at PS with an ROI of -20% so your profit was -77.7. You made a 30 profit at 888 with a 6 investment. So your total profit is -47.7 with a total investment of 394.5.

ROI =- 47.7/394. 5=-12.1%

What sixfour said doing it another way

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09-14-2018 , 01:49 PM

statmanhal

Pooh-Bah

Join Date: Jan 2009 Posts: 4,987

Quote:

Originally Posted by ArtyMcFly

The big ROI on 888 is barely gonna dent your overall number, because you apparently only played 2 games on that site and they were at a slightly lower buy-in anyway.

Yeah, but the profit was huge (relatively), so it can makes a big difference depending on how youi calculate . It's a question of averaging profit vs averaging ROI.

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09-14-2018 , 01:55 PM

tucanroman

grinder

Join Date: Mar 2017 Posts: 434

Yes lol, I just played 2 stts on 888 because of the ddos attack. I was playing only 888 and started on PS just because of that problem that was there for like 8 days. I don't trust 888 until they fix it 100%

Thanks guys I will use this tonight after session to calculate it in my "eat meat again" challenge. Yesterdays I was so mentaly roast after a big session that I just couldn't figure out how to get the number.

Why does the web page does it wrong? I put the 39x.xx investemnt and the -67.xx profits and it shows -135.xx ROI

888 profits are around 20 not 30

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09-14-2018 , 03:22 PM

sixfour

should be called sevenfour

Join Date: Dec 2005 Posts: 74,751

A 500% ROI on a $3 donkament is $15. If you have played two at that rate, you have made $30. We can't say why whatever tool you are using is correct or wrong if you don't know yourself, we're assuming you're calculating the individual sites right

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09-14-2018 , 06:37 PM

statmanhal

Pooh-Bah

Join Date: Jan 2009 Posts: 4,987

One aspect not yet mentioned is sample size.

To be 90% confident you are a winning player, 100 or so tournaments is adequate if your limited sample ROI is 20% or better; but for a lower initial ROI, say 10%, a sample size of 300 or more is required. If your initial ROI is negative, first get it turned around before worrying about sample size.

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09-14-2018 , 08:51 PM

#10

tucanroman

grinder

Join Date: Mar 2017 Posts: 434

500 wasn't the actual number, but something like that, I think profits there were 24.xx

statmanhal: I tryed this as a way of having some little montly money but I think it did not worked out. I will do it anyway but in the 180's where my ROI is 22% in almost 2k sample

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09-14-2018 , 10:41 PM

#11

statmanhal

Pooh-Bah

Join Date: Jan 2009 Posts: 4,987

I should have noted that the sample sizes I posted were for a STT, which the OP referred to. Since the variance is much greater for MTTs, a much larger sample size will be required.

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09-15-2018 , 04:59 PM

#12

tucanroman

grinder

Join Date: Mar 2017 Posts: 434

2k sample size for 180's is enough? I think I read here it was 1k. I lost my last years data when my HDD died in march, I use this almost 2k sample from poker pro labs. I can't find the way to see the complete sample from where I started the $1's 180's by october 2017

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09-17-2018 , 09:07 PM

#13

tucanroman

grinder

Join Date: Mar 2017 Posts: 434

Guys I don't understand this

I will put the exact numbers. Since I started the challenge I played:

- 15 SNG $4.50. I spend on this $67.5, and winnings are 158.08 (net winnings 90.58)
- 52 SNG $1. I spend on this $52, and winnings are 39.82 (net winnings -12.18)

So winnings: 158.08 + 39.82 = 197.9
So cost: 67.5 + 52 = 119.50

So, winnings divided cost: 119.50 / 197.9 = 1.656
So, my ROI is 165.6 % as it make no "math sense" it probably is 65.6%

Aproved??

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09-17-2018 , 09:18 PM

#14

tucanroman

grinder

Join Date: Mar 2017 Posts: 434

Well.. big problem now :P

I did todays numbers and ROI is 5.794

It would be 479.4% ??

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09-17-2018 , 10:30 PM

#15

King Spew

Just average

Join Date: Apr 2006 Posts: 15,224

Look at Arty's equation:

Quote:

Originally Posted by ArtyMcFly

ROI% = (Total cashes minus total buyins)/total buyins, or net profit (or loss) divided by total buyins.

Quote:

Originally Posted by tucanroman

- 15 SNG $4.50. I spend on this $67.5, and winnings are 158.08 (net winnings 90.58)
- 52 SNG $1. I spend on this $52, and winnings are 39.82 (net winnings -12.18)

(197.9-119.5) / 119.5
78.4 / 119.5
65.6%

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09-17-2018 , 10:54 PM

#16

tucanroman

grinder

Join Date: Mar 2017 Posts: 434

Thanks! I didn't understand how to convert the 1,xx to % now I do!

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09-18-2018 , 08:12 AM

#17

ArtyMcFly

Carpal \'Tunnel

Join Date: Dec 2014 Posts: 13,256

It's pretty intuitive really. ROI means Return on Investment.
Your return is your net profit (or loss), and your investment was your buy-ins. Just divide R by I to find out the percentage.

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09-24-2018 , 11:48 AM

#18

tucanroman

grinder

Join Date: Mar 2017 Posts: 434

Here is the math fish again

Now my problem is negative ROI. I will write the exact numbers from yesterday:

Cost 31.5
winnings: 5.63

Then, HM2 says its -82.13% ROI.
Then, if I do what we talked is 5.63/31.5 = 0.178

How do I turn 0.178 to -82.13%. I can't find the way.

I ask because I need to mix the result from 2 type of tourneys. Where:

Cost: 56.6
winnings: 14.44

Result is 0.255. But ROI can't be -25.5%

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09-24-2018 , 11:52 AM

#19

tucanroman

grinder

Join Date: Mar 2017 Posts: 434

Now.. thinking about it I think I find the way

In the first example, if I do 1 - 0.178% it turns to be 0.82. So there is the -82%

So, the mix of tourneys will be -74.5 %. Am I right?

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09-24-2018 , 11:57 AM

#20

Kurn, son of Mogh

Carpal \'Tunnel

Join Date: Sep 2002 Posts: 16,232

For the first group:

(5.63 - 31.5)/31.5 = - 82.13%

For the 2nd:

(14.44 - 56.6)/56.6 = -74.49%

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