code: def mc2mvsk(args):
      """convert central moments to mean, variance, skew, kurtosis"""
      mc, mc2, mc3, mc4 = args
      skew = np.divide(mc3, mc2**1.5)
      kurt = np.divide(mc4, mc2**2.0) - 3.0
      return (mc, mc2, skew, kurt)
  
file_path: statsmodels/statsmodels/sandbox/distributions/tests/check_moments.py
imports: import numpy
  from scipy import stats
  from statsmodels.sandbox.distributions.sppatch import expect_v2
  from .distparams import distcont
label_desc: Use image node_id 1 for calling a global function with example usage: mc2mvsk(args) and returns: mc,  mc2,  skew,  kurt