code: def mean(self) -> np.array:
      return self.new_m if self.n else np.zeros(self.width)
  
file_path: scattertext/scattertext/contextual_embeddings/running_stats_array.py
imports: import numpy
label_desc: Use image node_id 4 for calling the RunningStatsArray obj's underlying member method code with example usage: obj.mean() and returns: unknown