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0
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0
answers
29
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Generalized variance of a multinomial distribution
combinations
R2 <- 100 # Times to determine an index to remove
dets <- matrix(NA, R1, R2)
for (i in 1:R1){
# Determine distribution parameters
#
n <- sample(seq(1, 10, 1), 1, replace = F) # Number of dice …
2
votes
0
answers
29
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Why are consecutive 6s faster conditioning on no odd rolls?
Let A be the expected number of rolls of a fair d6 until you roll two consecutive sixes, conditional on every roll up to the consecutive sixes being even.
Let B be the expected number of rolls of a fa …
0
votes
How to win this dice probability game?
() {
x = rgeom(6,1/6) # the number of extra rolls is geometric distributed
k = 20 # simulation for 20 strategies
strategy = rep(0,k) # vector tonkeep the score
### loop to simulate dice …
1
vote
Choosing elements of an array based on given probabilities for each element
in range(len(w)):
ui = random.uniform(0, 1)
ki = ui ** (1.0/w[j])
if ki > maxU:
maxU = ki
imax = j
return imax, x[imax]
#Test: Let us emulate two dice …
1
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0
answers
20
views
What is the difference between sample space and support of a random vairbale?
I read an example where someone considered a biased-towards-even 6-faces dice and say the sample space is $\{1, 2, 3, 4, 5, 6\}$ while the support is only $\{2, 4, 6\}$. … But if the dice is assumed to be biased and only produces even outcomes, are the odd values still worth to be included in the sample space, defined as the set of possible outcomes ? …
2
votes
Accepted
Why variance of least square estimator in simple regression is conditional on predictor?
Since the throw of this dice in itself does not tell us anything about $\mu$, it is ancillary. …
1
vote
1
answer
60
views
Multiplying values from a uniform distribution approximates to which distribution?
Example: if I keep collecting the sums of three dice, I will get a symmetric distribution. … Example: if I keep collecting the products of three dice, I will get a distribution which is very skewed to the right. …
3
votes
Accepted
Mean Waiting Time for a dice rolling game
The question refers to the minimum number of die rolls and/or coin fills.
If Peter fails on the first two rolls, he must roll at least 2 more times for a minimum of 4 rolls. Such as: 1 - 2 - 1 - 1
If …
1
vote
1
answer
39
views
Mean Waiting Time for a dice rolling game
This question is from 40 Puzzles and Problems in Probability and Mathematical Statistics by Wolfgang Schwarz:
Peter and Paula play a simple game of dice, as follows. …
3
votes
Accepted
Probability Problem from The Game "Dice & Fold"
With each die roll, the number of dice increases by 1 with a probability $p=1/3$ and decreases by 1 with a probability $q=2/3$. …
0
votes
1
answer
54
views
Probability Problem from The Game "Dice & Fold"
You continue rolling all your dice one by one until you have no die left.
For clarity: Say you have 2 dice now, you roll one of them and get 4. … If you were to get a 6, you will get an extra die such that you now have 3 dice. The game ends when you are left with no die.
All the dice have uniform probabilities of getting 1-6. …
1
vote
Accepted
Independence of user actions on a social media platform
The whole point is that I doubt you have homogenuous data (aka identically distributed), so any formal statistical test is basically pointless; you will need to slice and dice it until you can be reasonably …
0
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0
answers
29
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Comparing probabilistic estimation functions
Though not exactly the same situation, it reminded me of the sum of two dice, which produces such a curve. …
0
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0
answers
15
views
Path dependent expectation value
Suppose I play a game with dice with a complicated win condition, as follows:
You start rolling a d12
If you roll a 12, you replace the d12 by a d6
when you roll a 6, you win (let's call this path 1 … How would one calculate the expected number of dice rolls of any kind to get to the win condition? …
4
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What does sample space look like for 3 dice?
outcomes from 6-sided dice: [ 1 2 3 4 5 6
outcomes from 8-sided dice: 1 2 3 4 5 6 7 8
outcomes from 12-sided dice: 1 2 3 4 5 6 7 8 9 10 11 12 ]
This works. … You can fill in the probabilities of each of the 26 samples in this space,
outcomes from 6-sided dice: [ a b c d e f
outcomes from 8-sided dice: g h i j k l m n
outcomes from 12-sided dice: o p q …