  Study of an N qubit mixed symmetric separable states is a long standing
challenging problem as there exist no unique separability criterion. In this
regard, we take up the N-qubit mixed symmetric separable states for a detailed
study as these states are of experimental importance and offer elegant
mathematical analysis since the dimension of the Hilbert space reduces from 2^N
to N + 1. Since there exists a one to one correspondence between spin-j system
and an N-qubit symmetric state, we employ Fano statistical tensor parameters
for the parametrization of spin density matrix. Further, we use geometric
multiaxial representation(MAR) of density matrix to characterize the mixed
symmetric separable states. Since separability problem is NP hard, we choose to
study it in the continuum limit where mixed symmetric separable states are
characterized by the P-distribution function \lambda(\theta; \phi). We show
that the N-qubit mixed symmetric separable state can be visualized as a
uniaxial system if the distribution function is independent of \theta and \phi.
We further choose distribution function to be the most general positive
function on a sphere and observe that the statistical tensor parameters
characterizing the N-qubit symmetric system are the expansion coefficients of
the distribution function. As an example for the discrete case, we investigate
the MAR of a uniformly weighted two qubit mixed symmetric separable state. We
also observe that there exists a correspondence between separability and
classicality of states.
