code: def _chk_size(a, b):
      a = ma.asanyarray(a)
      b = ma.asanyarray(b)
      (na, nb) = (a.size, b.size)
      if na != nb:
          raise ValueError(
              "The size of the input array should match!"
              " (%s <> %s)" % (na, nb)
          )
      return (a, b, na)
  
imports: from __future__ import division, print_function, absolute_import
  import numpy
  from numpy import ndarray
  import numpy.ma
  from numpy.ma import masked, nomask
  from scipy._lib.six import iteritems
  import itertools
  import warnings
  from collections import namedtuple
  from .None import distributions
  import scipy.special
  from ._stats_mstats_common import _find_repeats, linregress, theilslopes, siegelslopes
label_desc: Use image node_id 3 for calling a global function with example usage: _chk_size(a, b) and returns: a,  b,  na