code: def mean_prop(batch):
      return [np.mean(x) for x in batch]
  
file_path: deepchecks/tests/vision/checks/data_integrity/property_label_correlation_test.py
imports: import numpy
  from hamcrest import assert_that, close_to, contains_exactly, has_entries
  from deepchecks.vision.checks import PropertyLabelCorrelation
  from tests.base.utils import equal_condition_result
label_desc: Use image node_id 2 for calling a global function with example usage: mean_prop(batch) and returns: unknown