Is it possible to weight the dice in AnyDice.com and then use like normal?
I'd like to use a standard d6, with values 1-6, but weighted such that the probability for rolling a specific value is as follows.
1: 18%
2: 18%
3: 19%
4: 18%
5: 17%
6: 10%
I'd then like to find the probability of
Xd6
Xd6 +Y
Xd6 +Y dropping lowest N
etc.
Can this be done?
Yes, this can be done. The Anydice documentation details how we can describe arbitrary dice. Functionally with percentages like that, the dice is equivalent to:
... So we'll define exactly that die in this Anydice program:
W: {
1:18,
2:18,
3:19,
4:18,
5:17,
6:10
}
output d6 \ for comparison \
output dW
The syntax used there is sequences, and we're using it so we don't have to write out {1, 1, 1, 1, 1, 1, 1, 1... and so on eighteen times, and then the same for the five other faces. That's too prone to error and difficult to read. A more normal usage of sequences is writing 1..3:2, which is a sequence from 1 to 3 repeated twice, which is to say it represents 1, 2, 3, 1, 2, 3. We're generating a sequence that contains 1 repeated 18 times. The same goes for the other values.
W is a variable (covered in The Basics in the documentation). Variables must be uppercase, but you can name it whatever you want, including WEIGHTED_DIE if you'd prefer.
