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Dera Derrick, if you have a continuous distribution with the ordered observations x_(1), x_(2), ... ,x_(r), ... ,x_(s), ... ,x_(N) you can use the following expression (resulting from the binomial distribution) for determining the CI: Pob[ x_(r)<= med <= x_(s) ]=(1/2)^N sum_(i=r, r+1,...,s-1) (N over i) asymtotically (works well for N>15) use r=N/2 - u_(alpha/2) sqrt(N/4) (rounding down) for the lower and s=N-r+1 for the upper bound. Kind regards Robert Németh %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%