On 11/30/05, Scott Story <[EMAIL PROTECTED]> wrote:
I am trying to write a function that will solve a simple system of
nonlinear equations for the parameters that describe the beta
distribution (a,b) given the mean and variance.
mean = a/(a+b)
variance = (a*b)/(((a+b)2) * (a+b+1))
Any help as to where to start would be welcome.
The simplest way to go is probably to use the fitdistr function in MASS
package.
YNOEL
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