DOC correct return type of check_random_state
@@ -1171,8 +1171,8 @@ def check_random_state(seed):
Returns
-------
- None
- No returns.
+ :class:`numpy:numpy.random.RandomState`
+ The random state object based on `seed` parameter.
"""
if seed is None or seed is np.random:
return np.random.mtrand._rand
