code: def test_bias_raises():
      x = np.random.random(size=(30, 2))
      y = da.from_array(x, 3)
  
      with pytest.raises(NotImplementedError):
          dask.array.stats.skew(y, bias=False)
  
      with pytest.raises(NotImplementedError):
          dask.array.stats.kurtosis(y, bias=False)
  
file_path: dask/dask/array/tests/test_stats.py
imports: from __future__ import annotations
  import warnings
  import pytest
  from packaging.version import parse
  import numpy
  import dask.array
  import dask.array.stats
  from dask.array.utils import allclose, assert_eq
  from dask.delayed import Delayed
label_desc: Use image node_id 2 for calling a global function with example usage: test_bias_raises() without return types