  The magnetic-field dependencies of the longitudinal and Hall resistance of
the electron-doped compounds Nd$_{2-x}$Ce$_x$CuO$_{4+\delta}$ in underdoped
region with $x$=0.14 and with varying degrees of disorder ($\delta$) were
investigated. It was established experimentally that the correlation between
the longitudinal electrical resistivity and the Hall resistivity can be
analyzed on the basis of scaling relationships: $\rho_{xy}$($B$)$\sim$
$\rho^{\beta}_{xx}$($B$). For the totality of the investigated single-crystal
films of Nd$_{2-x}$Ce$_x$CuO$_{4+\delta}$/SrTiO$_3$ the universal value
$\beta$=1.5 $\pm$0.4 is found. The observed feature in the electron-doped
two-dimensional systems can be associated both with a displaying of anisotropic
$s$ - wave or $d$-wave pairing symmetry and with a rather strong pinning due to
an essential degree of disorder in the samples under study.
