  The difference diffusion model with two equilibrium states is given by a
stochastic equation with two components: the predicted one, which is determined
by the regression function of increments with two equilibriums, and the
stochastic one, which is the martingale difference. We propose a classification
of zones of influence of equilibriums according to asymptotic properties of
trajectories of statistical experiments. We study asymptotic behavior of
statistical experiments, determined by the sums of $N$ sample values, as
$N\to\infty$.
