diff --git a/HowBadIsMyBatch.ipynb b/HowBadIsMyBatch.ipynb
index 548fbbefc3c..f8b2d4178e0 100644
--- a/HowBadIsMyBatch.ipynb
+++ b/HowBadIsMyBatch.ipynb
@@ -172,8 +172,8 @@
     "class AggregationHelper:\n",
     "\n",
     "    @staticmethod\n",
-    "    def aggregateAndFlattenColumnsAndRenameColumns(dataFrame, aggFunctionsByColumn, columnNameMappingsDict):\n",
-    "        aggregatedDataFrame = dataFrame.agg(aggFunctionsByColumn)\n",
+    "    def aggregateAndFlattenColumnsAndRenameColumns(groupBy, aggFunctionsByColumn, columnNameMappingsDict):\n",
+    "        aggregatedDataFrame = groupBy.agg(aggFunctionsByColumn)\n",
     "        AggregationHelper._flattenColumns(aggregatedDataFrame)\n",
     "        return aggregatedDataFrame.rename(columns = columnNameMappingsDict)\n",
     "\n",
@@ -198,14 +198,14 @@
     "\n",
     "    # create table from https://www.howbadismybatch.com/combined.html\n",
     "    def createSevereEffectsBatchCodeTable(self):\n",
-    "        batchCodeTable = BatchCodeTableHelper._createSevereEffectsBatchCodeTable(self.dataFrame.groupby('VAX_LOT'))\n",
+    "        batchCodeTable = BatchCodeTableHelper.createSummationTable(self.dataFrame.groupby('VAX_LOT'))\n",
     "        batchCodeTable = batchCodeTable[['ADRs', 'DEATHS', 'DISABILITIES', 'LIFE THREATENING ILLNESSES', 'HOSPITALISATIONS', 'EMERGENCY ROOM OR DOCTOR VISITS']]\n",
     "        batchCodeTable = batchCodeTable.sort_values(by = 'ADRs', ascending = False)\n",
     "        return self._addCompanyColumn(batchCodeTable, self._createCompanyByBatchCodeTable())\n",
     "\n",
     "    @staticmethod\n",
-    "    def _createSevereEffectsBatchCodeTable(\n",
-    "        dataFrame,\n",
+    "    def createSummationTable(\n",
+    "        groupBy,\n",
     "        # FK-TODO: rename \"ADRs\" and \"Total reports\" to \"Total Number of Adverse Reaction Reports\" in all places\n",
     "        columnNameMappingsDict = {\n",
     "                \"DIED_size\": \"ADRs\",\n",
@@ -216,7 +216,7 @@
     "                'ER_VISIT_sum': 'EMERGENCY ROOM OR DOCTOR VISITS'\n",
     "            }):\n",
     "        return AggregationHelper.aggregateAndFlattenColumnsAndRenameColumns(\n",
-    "            dataFrame = dataFrame,\n",
+    "            groupBy = groupBy,\n",
     "            aggFunctionsByColumn = {\n",
     "                'DIED': ['sum', 'size'],\n",
     "                'L_THREAT': 'sum',\n",
@@ -290,7 +290,7 @@
     "    # FK-TODO: DRY because it generates a subset of BatchCodeTableHelper.createSevereEffectsBatchCodeTable()\n",
     "    @staticmethod\n",
     "    def _getDoseTable(dataFrame):\n",
-    "        doseTable = BatchCodeTableHelper._createSevereEffectsBatchCodeTable(\n",
+    "        doseTable = BatchCodeTableHelper.createSummationTable(\n",
     "            dataFrame,\n",
     "            columnNameMappingsDict = {\n",
     "                \"DIED_size\": \"Total reports\",\n",
@@ -597,7 +597,7 @@
     "\n",
     "class BatchCodeTableFactoryTest(unittest.TestCase):\n",
     "\n",
-    "    def test_createSevereEffectsBatchCodeTable(self):\n",
+    "    def testcreateSummationTable(self):\n",
     "        # Given\n",
     "        dataFrame = VaersDescr2DataFrameConverter.createDataFrameFromDescrs(\n",
     "            [\n",