Goodman Games

Fan Forums
It is currently Tue Oct 21, 2014 3:30 pm

All times are UTC - 6 hours




Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 31 posts ]  Go to page Previous  1, 2
Author Message
 Post subject: Re: Two weapon fighting and critical hits
PostPosted: Sun Jun 12, 2011 10:59 am 
Offline
Mighty-Thewed Reaver

Joined: Sun Jun 12, 2011 1:44 am
Posts: 341
jmucchiello wrote:
Using two dice as you are completely alters the probabilities. If you are going to use two dice, use them in d% form: d30 = d10 plus (d6 -- 1-2: +0, 3-4: +10, 5-6: +20).


Um, I'm not a statistician, but your solution still involves rolling 2 dice. Doesn't that render the "Statistical Skew" argument moot? Even if your method is more accurate, we're quibbling over a few percentage points: and it's still clunky. :) At least my way is just simple arithmetic.

I'm hoping the game shop I'm going to next Saturday has a set they are willing to let me borrow so I can do an "as is" beta test. The last time I checked: a set of Zocchi dice was something like 30$+ shipping; & doesn't include a d30.

For my games, I was planing on expanding or truncating the tables as needed to fit the dice conventions.


Top
 Profile  
 
 Post subject: Re: Two weapon fighting and critical hits
PostPosted: Sun Jun 12, 2011 7:11 pm 
Offline
Chaos-Summoning Sorcerer

Joined: Mon Mar 14, 2011 5:28 am
Posts: 779
Tortog wrote:
Um, I'm not a statistician, but your solution still involves rolling 2 dice. Doesn't that render the "Statistical Skew" argument moot?

I'd like to get together with you and play a little game called Craps.

I'm not ADDING the results of two dice together. You are. That is the difference. Statistical skew? You are off the chart.

Here's the math: Roll 1d20. The odds of rolling a 1 is 1 in 20 or 5%. Now roll 2d10-1 (the d19) To get a 1, the first die has to be a 1 and second die has to be a 1. A 1 on a d10 is 1 in 10 or 10%. Thus the odds of a 1 on both dice is 10% of 10% or 1%. Are you saying 1% is close to 5%? Okay it is, kind of. Now a roll of 10 on d20 has a 5% change of happening. To roll a 10 on 2d10-1, you need 1 and a 10 (1+10-1=10), or 2 and 9, or 3 and 8, etc. The result of calculating that out is about 21% chance of getting a 10 on 2d10-1. Is 21% close to 5%? Is it as likely as 1%?

Now, my method: roll d10 and d6(low = +0, high = +10). To get a 10 on that you must roll a 10 on the d10 and low on the d6. The change of roll exactly 10 on a d10 is 10%. A result of low is 1, 2 or 3 on a d6, or 50%. 50% of 10% is 5%. Exactly the same a rolling a d20.

This is 3rd and 4th grade math. It's not rocket science.


Top
 Profile  
 
 Post subject: Re: Two weapon fighting and critical hits
PostPosted: Mon Jun 13, 2011 10:42 am 
Offline
Mighty-Thewed Reaver

Joined: Sun Jun 12, 2011 1:44 am
Posts: 341
jmucchiello wrote:
Tortog wrote:
Um, I'm not a statistician, but your solution still involves rolling 2 dice. Doesn't that render the "Statistical Skew" argument moot?

I'd like to get together with you and play a little game called Craps.

I'm not ADDING the results of two dice together. You are. That is the difference. Statistical skew? You are off the chart.

Here's the math: Roll 1d20. The odds of rolling a 1 is 1 in 20 or 5%. Now roll 2d10-1 (the d19) To get a 1, the first die has to be a 1 and second die has to be a 1. A 1 on a d10 is 1 in 10 or 10%. Thus the odds of a 1 on both dice is 10% of 10% or 1%. Are you saying 1% is close to 5%? Okay it is, kind of. Now a roll of 10 on d20 has a 5% change of happening. To roll a 10 on 2d10-1, you need 1 and a 10 (1+10-1=10), or 2 and 9, or 3 and 8, etc. The result of calculating that out is about 21% chance of getting a 10 on 2d10-1. Is 21% close to 5%? Is it as likely as 1%?

Now, my method: roll d10 and d6(low = +0, high = +10). To get a 10 on that you must roll a 10 on the d10 and low on the d6. The change of roll exactly 10 on a d10 is 10%. A result of low is 1, 2 or 3 on a d6, or 50%. 50% of 10% is 5%. Exactly the same a rolling a d20.

This is 3rd and 4th grade math. It's not rocket science.


Whoh, peace dude... no need to be so condescending.

why are you using the numbers for a d20? The chances of rolling a 1 on a d30 are .03333333333333333 etc.: or, 3.3% so which ever method gets closest to that should be the most accurate.

You're generating a 1, 5% of the time and I'm generating a 1, 1% of the time... so the math says your method is more accurate. right? So what.

I just was pointing out the fact that rolling 2 dice to emulate a fictional d30 is cumbersome no matter what methodology is employed. :)


Top
 Profile  
 
 Post subject: Re: Two weapon fighting and critical hits
PostPosted: Mon Jun 13, 2011 1:34 pm 
Offline
Chaos-Summoning Sorcerer

Joined: Mon Mar 14, 2011 5:28 am
Posts: 779
Do you find rolling percentage dice cumbersome? The control die for normal d30 rolls is exactly the same as the 10s die in a d% roll.


Top
 Profile  
 
 Post subject: Re: Two weapon fighting and critical hits
PostPosted: Mon Jun 13, 2011 1:51 pm 
Offline
Far-Sighted Wanderer
User avatar

Joined: Wed Jun 08, 2011 2:25 pm
Posts: 49
Location: San Diego, CA
Tortog wrote:
Um, I'm not a statistician, but your solution still involves rolling 2 dice. Doesn't that render the "Statistical Skew" argument moot?


No it doesn't. His method has the exact same probability of generating a given result as does rolling a die of the given size.

Tortog wrote:
You're generating a 1, 5% of the time and I'm generating a 1, 1% of the time... so the math says your method is more accurate. right? So what.


So what? So, the systems in the game you are playing are built around the idea that you are as likely to roll a 1, a 10, a 20 or any other number in between. No one number is more likely to come up than any other. If you have a 1% chance to generate 1 value and 10% chance to another value the system should really take that into consideration.


Tortog wrote:
I just was pointing out the fact that rolling 2 dice to emulate a fictional d30 is cumbersome no matter what methodology is employed. :)


If it is cumbersome either way you go, why in the hell wouldn't you want to do it the right way? The way that gives the same results as using the die you are trying to emulate.

_________________
Magic: 40% of the time it works every time.


Top
 Profile  
 
 Post subject: Re: Two weapon fighting and critical hits
PostPosted: Thu Jun 16, 2011 12:10 pm 
Offline
Tight-Lipped Warlock

Joined: Fri Jan 28, 2011 2:52 pm
Posts: 1086
jmucchiello wrote:
Do you find rolling percentage dice cumbersome? The control die for normal d30 rolls is exactly the same as the 10s die in a d% roll.


I used a d6 and a d10 in place of a d30 two nights ago. Because I was too lazy to get my dicebag out of the closet.

Worked just fine. No more cumbersome than d%. Less cumbersome than dice pool mechanics, barring Fudge dice.


Top
 Profile  
 
Display posts from previous:  Sort by  
Forum locked This topic is locked, you cannot edit posts or make further replies.  [ 31 posts ]  Go to page Previous  1, 2

All times are UTC - 6 hours


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group