Hello,

The beta distribution has

mean = a/(a+b)

variance = ab/((a+b)^2 * (a+b+1))

where a and b are shape parameters

I want to solve for a and b in terms of the mean and variance.

For example, I want an answer that looks like this

a = var*mean^2

b = mean*var

except I made up these expressions and I want the real ones.

Thanks a lot for any help.

J