Variance of 36 standard dice rolls

[Haatajajunk]

So i need to find the variance of a number of dice rolls. I know that i use the following formula:


N
∑ ( X i - µ)2
i = 1
σ2 = ---------------
N

but i don't know how to use it. I feel really stupid asking this but i am really lost right now. Thanks for any help in advance.

[Claude Bile]

I think N stands for the number of samples (i.e. 36), mu is the mean (which you can calculate easily enough) and X is the value for the ith sample.

What you are essentially doing is finding the average deviation from the mean.

You would do well to double check my answer though.

Claude.