code: def variance(self) -> np.array:
      return (
          self.new_s / (self.n - 1)
          if self.n > 1
          else np.zeros(self.width)
      )
  
file_path: scattertext/scattertext/contextual_embeddings/running_stats_array.py
imports: import numpy
label_desc: Use image node_id 5 for calling the RunningStatsArray obj's underlying member method code with example usage: obj.variance() and returns: unknown