diff --git a/HowBadIsMyBatch.ipynb b/HowBadIsMyBatch.ipynb
index 33a844920c3..58720f1bca4 100644
--- a/HowBadIsMyBatch.ipynb
+++ b/HowBadIsMyBatch.ipynb
@@ -169,7 +169,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "class AggregationHelper:\n",
+    "class SummationTableFactory:\n",
     "\n",
     "    @staticmethod\n",
     "    def createSummationTable(\n",
@@ -183,23 +183,16 @@
     "                'HOSPITAL_sum': 'HOSPITALISATIONS',\n",
     "                'ER_VISIT_sum': 'EMERGENCY ROOM OR DOCTOR VISITS'\n",
     "            }):\n",
-    "        return AggregationHelper._aggregateAndFlattenColumnsAndRenameColumns(\n",
-    "            groupBy = groupBy,\n",
-    "            aggFunctionsByColumn = {\n",
+    "\n",
+    "        summationTable = groupBy.agg({\n",
     "                'DIED': ['sum', 'size'],\n",
     "                'L_THREAT': 'sum',\n",
     "                'DISABLE': 'sum',\n",
     "                'HOSPITAL': 'sum',\n",
     "                'ER_VISIT': 'sum'\n",
-    "            },\n",
-    "            columnNameMappingsDict = columnNameMappingsDict)\n",
-    "\n",
-    "    # FK-TODO: inline method\n",
-    "    @staticmethod\n",
-    "    def _aggregateAndFlattenColumnsAndRenameColumns(groupBy, aggFunctionsByColumn, columnNameMappingsDict):\n",
-    "        aggregatedDataFrame = groupBy.agg(aggFunctionsByColumn)\n",
-    "        AggregationHelper._flattenColumns(aggregatedDataFrame)\n",
-    "        return aggregatedDataFrame.rename(columns = columnNameMappingsDict)\n",
+    "            })\n",
+    "        SummationTableFactory._flattenColumns(summationTable)\n",
+    "        return summationTable.rename(columns = columnNameMappingsDict)\n",
     "\n",
     "    @staticmethod\n",
     "    def _flattenColumns(dataFrame):\n",
@@ -222,7 +215,7 @@
     "\n",
     "    # create table from https://www.howbadismybatch.com/combined.html\n",
     "    def createSevereEffectsBatchCodeTable(self):\n",
-    "        batchCodeTable = AggregationHelper.createSummationTable(self.dataFrame.groupby('VAX_LOT'))\n",
+    "        batchCodeTable = SummationTableFactory.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",
@@ -291,7 +284,7 @@
     "    # FK-TODO: DRY because it generates a subset of BatchCodeTableHelper.createSevereEffectsBatchCodeTable()\n",
     "    @staticmethod\n",
     "    def _getDoseTable(dataFrame):\n",
-    "        doseTable = AggregationHelper.createSummationTable(\n",
+    "        doseTable = SummationTableFactory.createSummationTable(\n",
     "            dataFrame,\n",
     "            columnNameMappingsDict = {\n",
     "                \"DIED_size\": \"Total reports\",\n",