The Rancor Pit Forum Index
Welcome to The Rancor Pit forums!

The Rancor Pit Forum Index
FAQ   ::   Search   ::   Memberlist   ::   Usergroups   ::   Register   ::   Profile   ::   Log in to check your private messages   ::   Log in

Guidelines for Generating a 2D Results Tables
Post new topic   Reply to topic    The Rancor Pit Forum Index -> Tools -> Guidelines for Generating a 2D Results Tables
View previous topic :: View next topic  
Author Message
CRMcNeill
Director of Engineering
Director of Engineering


Joined: 05 Apr 2010
Posts: 11473
Location: Redding System, California Sector, on the I-5 Hyperspace Route.

PostPosted: Mon Aug 29, 2016 12:54 am    Post subject: Guidelines for Generating a 2D Results Tables Reply with quote

The probability of a particular number coming up on a roll of 2D changes from number to number, with the numerical odds as follows:
    2 = 1/36
    3 = 2/36
    4 = 3/36
    5 = 4/36
    6 = 5/36
    7 = 6/36
    8 = 5/36
    9 = 4/36
    10 = 3/36
    11 = 2/36
    12 = 1/36

So, for example, whenever you roll 2D, the statistically most likely result is a 7 (a 6-in-36 chance, or 1-in-6) while the statistically least likely result is either a 2 or a 12 (each with a 1-in-36 chance).

When generating a list, you can play with the numbers, so as to make a given result more likely. For example, if you wanted to have two results of equal likelihood on a 2D roll, you would assign one to the 2-3 result, and the other to 4, giving both a statistical likelihood of 3/36 by adding the odds of a given set of numbers together to create a greater likelihood than either would generate on their own (3/36 = 1/36 + 2/36).

For example, on a 2D Table I posted earlier, I used the following:

    2 = 1/36
    3 = 2/36
    4-5 = 7/36 (3/36 + 4/36)
    6-9 = 20/36 (5/36 + 6/36 + 5/36 + 4/36)
    10-11 = 5/36 (3/36 + 2/36)
    12 = 1/36

Essentially, by treating the probability numbers as fractions, adding the numerators of a multi-number set will give you an idea how likely a given result is, and help you structure your lists to make a particular result the most likely outcome.

Enjoy.
_________________
"No set of rules can cover every situation. It's expected that you will make up new rules to suit the needs of your game." - The Star Wars Roleplaying Game, 2R&E, pg. 69, WEG, 1996.

The CRMcNeill Stat/Rule Index
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    The Rancor Pit Forum Index -> Tools All times are GMT - 4 Hours
Page 1 of 1

 
Jump to:  
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 vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group


v2.0