code: def var_chunk(seq):
      squares, total, n = 0.0, 0.0, 0
      for x in seq:
          squares += x**2
          total += x
          n += 1
      return squares, total, n
  
imports: from __future__ import annotations
label_desc: Use image node_id 5 for calling a global function with example usage: var_chunk(seq) and returns: squares,  total,  n