class_docstr: A set of statistics about a single value series.
class_docstr_tok: ["A","set","of","statistics","about","a","single","value","series","."]
code: def add(self, val):
      self.num += 1
      if self.min > val:
          self.min = val
      if self.max < val:
          self.max = val
      self.sum += val
      self.sum_sq += val**2
  
imports: import collections
  import functools
  import math
  import os
  import sys
  import threading
  import time
label_desc: Use image node_id 3 for calling the Stat obj's underlying member method code with example usage: obj.add(val) without return types