Editing Probability (section)

===Notation/How do I write this stuff?===

I'm assuming you know that a [[d4]] is a four-sided-die, and 2d4 is two four-sided-dice. If you're confused regarding dice notation, see [[dice]].

In order to preserve the most information when writing anything, it's good practice to write your probabilities as (number of desired events)/(number of total possible events). The probability of rolling a 4, 5 or 6 is written as 3/6.

While 3/6 is numerically equivalent to 1/2, 50%, 0.5, or just .5, you do lose information regarding the total possible outcomes in simplifying fractions. However, it can be more informative to say 20% when saying "rolling a 17+ on a d20," though. Unless you're in a probability class, the way you present your answer won't matter.

The probability of an event E happening is written as [[File:Probability Eq0.png|x30px]]. This is always a number between 0 and 1 (including 1 and 0). If you get something other than a number between 0 and 1, you're doing something wrong.