code: def test_var(
      *,
      dtype_and_x,
      keep_dims,
      test_flags,
      backend_fw,
      fn_name,
      on_device,
  ):
      input_dtype, x, axis, correction = dtype_and_x
      helpers.test_function(
          input_dtypes=input_dtype,
          test_flags=test_flags,
          backend_to_test=backend_fw,
          fn_name=fn_name,
          on_device=on_device,
          rtol_=1e-1,
          atol_=1e-1,
          x=x[0],
          axis=axis,
          correction=correction,
          keepdims=keep_dims,
      )
  
file_path: ivy/ivy_tests/test_ivy/test_functional/test_core/test_statistical.py
imports: import numpy
  from hypothesis import strategies, assume
  import ivy_tests.test_ivy.helpers
  from ivy_tests.test_ivy.helpers import handle_test
label_desc: Use image node_id 12 for calling a global function with example usage: test_var() without return types