From 8632c43344e0f9822ac3d8ce8172ac960e77051e Mon Sep 17 00:00:00 2001
From: ernestoarbitrio <ernesto.arbitrio@gmail.com>
Date: Wed, 24 Jun 2020 10:51:28 +0200
Subject: [PATCH] fix for mr

---
 src/cr/cube/cubepart.py                     |  2 ++
 tests/integration/test_cubepart.py          | 18 +++++++++---------
 tests/integration/test_multiple_response.py |  4 +++-
 3 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/src/cr/cube/cubepart.py b/src/cr/cube/cubepart.py
index 685c08ba6..fe7eae189 100644
--- a/src/cr/cube/cubepart.py
+++ b/src/cr/cube/cubepart.py
@@ -1034,6 +1034,8 @@ def standard_deviation(self):
     @lazyproperty
     def standard_error(self):
         """ -> np.ndarray, percentages standard error"""
+        if self.dimension_types[0] == DT.MR:
+            return np.sqrt(self._variance / self.rows_margin)
         return np.sqrt(self._variance / np.sum(self.rows_margin))
 
     @lazyproperty
diff --git a/tests/integration/test_cubepart.py b/tests/integration/test_cubepart.py
index cd0a69039..830e77028 100644
--- a/tests/integration/test_cubepart.py
+++ b/tests/integration/test_cubepart.py
@@ -1471,15 +1471,15 @@ def it_provides_std_dev_err_univ_mr_with_hs(self):
         np.testing.assert_almost_equal(
             strand.standard_error,
             [
-                0.0022361,
-                0.0017264,
-                0.0011327,
-                0.001562,
-                0.0013928,
-                0.0011945,
-                0.0007275,
-                0.0023938,
-                0.0006968,
+                0.0045332,
+                0.0050433,
+                0.0053114,
+                0.0051373,
+                0.0052165,
+                0.0052914,
+                0.0054104,
+                0.0040772,
+                0.0054158,
             ],
         )
 
diff --git a/tests/integration/test_multiple_response.py b/tests/integration/test_multiple_response.py
index 7ab1c8a4a..3da1fc207 100644
--- a/tests/integration/test_multiple_response.py
+++ b/tests/integration/test_multiple_response.py
@@ -33,7 +33,9 @@ def test_std_dev_err_simple_mr():
     np.testing.assert_almost_equal(
         strand.standard_deviation, [0.4898979, 0.4714045, 0.0]
     )
-    np.testing.assert_almost_equal(strand.standard_error, [0.185164, 0.1781742, 0.0])
+    np.testing.assert_almost_equal(
+        strand.standard_error, [0.2828427, 0.2357023, np.nan]
+    )
 
 
 def test_1D_mr_with_means():