code: def sqrt_n(values):
      return 1.0 * sum(values) / math.sqrt(len(values))
  
imports: import math
  from absl.testing import parameterized
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops.ragged import ragged_factory_ops
  from tensorflow.python.ops.ragged import ragged_math_ops
  from tensorflow.python.ops.ragged import ragged_tensor
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 3 for calling a global function with example usage: sqrt_n(values) and returns: unknown