  Superscaling analyses of inclusive electron scattering from nuclei are
extended from the quasielastic processes to the delta excitation region. The
calculations of $(e,e^\prime)$ cross sections for the target nucleus $^{12}$C
at various incident electron energies are performed using scaling functions
$f(\psi^{\prime})$ obtained in approaches going beyond the mean-field
approximation, such as the coherent density fluctuation model (CDFM) and the
one based on the light-front dynamics (LFD) method. The results are compared
with those obtained using the relativistic Fermi gas (RFG) model and the
extended RFG model (ERFG). Our method utilizes in an equivalent way both basic
nuclear quantities, density and momentum distributions, showing their role for
the scaling and superscaling phenomena. The approach is extended to consider
scaling function for medium and heavy nuclei with $Z\neq N$ for which the
proton and neutron densities are not similar. The asymmetry of the CDFM
quasielastic scaling function is introduced, simulating in a phenomenological
way the effects which violate the symmetry for $\psi^{\prime}\geq 0$ including
the role of the final-state interaction (FSI). The superscaling properties of
the electron scattering are used to predict charge-changing neutrino-nucleus
cross sections at energies from 1 to 2 GeV. A comparison with the results of
the ERFG model is made. The analyses make it possible to gain information about
the nucleon correlation effects on both local density and nucleon momentum
distributions.
