class_docstr: Results class for OneWayMixed models
  
      
class_docstr_tok: ["Results","class","for","OneWayMixed","models"]
code: def plot_scatter_all_pairs(self, title=None):
      from statsmodels.graphics.plot_grids import scatter_ellipse
  
      if self.model.k_exog_re < 2:
          raise ValueError("less than two variables available")
  
      return scatter_ellipse(
          self.params_random_units,
          # ell_kwds not implemented yet
          ell_kwds={"color": "r"},
      )
  
imports: import numpy
  import numpy.linalg
  from statsmodels.base.model import LikelihoodModelResults
  from statsmodels.tools.decorators import cache_readonly
label_desc: Use image node_id 9 for calling the OneWayMixedResults obj's underlying member method code with example usage: obj.plot_scatter_all_pairs(title) and returns: scatter_ellipse