Dice math

[Jabdah]

Hi!

I'm looking for a simple way (if there is) to calculate the probability that at least x out of y six-sided dices show the value z. Example = I roll 10 six-sided dices. What is the probability that 4 or more of them is a 6?

With simple I mean a formula that I can use in some spreadsheet, or a link to a useful website.

Anyone who can help me?

Thanks!

 

[tomBitonti]

This should do it:

http://stattrek.com/online-calculator/binomial.aspx

Put in 0.167 (approx 1/6) as the chance of success on a single trial.

For the example, the odds of 4 or more 6's is 0.07 (7/100).

Thx!

TomB

 

[Jabdah]

This should do it:

http://stattrek.com/online-calculator/binomial.aspx

Put in 0.167 (approx 1/6) as the chance of success on a single trial.

For the example, the odds of 4 or more 6's is 0.07 (7/100).

Thx!

TomB

Thanks TomB,

exactly what I was looking for!