diff --git a/docs/SymptomsCausedByCOVIDLots/js/SymptomVsSymptomChartDataProvider.js b/docs/SymptomsCausedByCOVIDLots/js/SymptomVsSymptomChartDataProvider.js
index 68492d9ac8f..a59b72f1b6c 100644
--- a/docs/SymptomsCausedByCOVIDLots/js/SymptomVsSymptomChartDataProvider.js
+++ b/docs/SymptomsCausedByCOVIDLots/js/SymptomVsSymptomChartDataProvider.js
@@ -1,13 +1,31 @@
 class SymptomVsSymptomChartDataProvider {
 
-    static retainCommonLots({ prrByLotX, prrByLotY }) {
-        const commonLots = SymptomVsSymptomChartDataProvider.#getCommonKeys(prrByLotX, prrByLotY);
+    // FK-TODO: extract utility class and test
+    static retainCommonKeys({ dict1, dict2 }) {
+        const commonKeys = SymptomVsSymptomChartDataProvider.#getCommonKeys(dict1, dict2);
         return {
-            prrByLotX: SymptomVsSymptomChartDataProvider.#retainKeysOfDict(prrByLotX, commonLots),
-            prrByLotY: SymptomVsSymptomChartDataProvider.#retainKeysOfDict(prrByLotY, commonLots)
+            dict1: SymptomVsSymptomChartDataProvider.#retainKeysOfDict(dict1, commonKeys),
+            dict2: SymptomVsSymptomChartDataProvider.#retainKeysOfDict(dict2, commonKeys)
         };
     }
 
+    static getChartData({ prrByLotX, prrByLotY }) {
+        const { dict1: prrByLotXCommon, dict2: prrByLotYCommon } =
+            SymptomVsSymptomChartDataProvider.retainCommonKeys(
+                {
+                    dict1: prrByLotX,
+                    dict2: prrByLotY
+                });
+        return Object
+            .keys(prrByLotXCommon)
+            .map(
+                lot =>
+                ({
+                    x: prrByLotXCommon[lot],
+                    y: prrByLotYCommon[lot]
+                }));
+    }
+
     static #getCommonKeys(dict1, dict2) {
         return Sets.intersection(
             SymptomVsSymptomChartDataProvider.#getKeySet(dict1),
diff --git a/docs/SymptomsCausedByCOVIDLots/test/SymptomVsSymptomChartDataProviderTest.js b/docs/SymptomsCausedByCOVIDLots/test/SymptomVsSymptomChartDataProviderTest.js
index 411c9dba08f..66fa15d6cf8 100644
--- a/docs/SymptomsCausedByCOVIDLots/test/SymptomVsSymptomChartDataProviderTest.js
+++ b/docs/SymptomsCausedByCOVIDLots/test/SymptomVsSymptomChartDataProviderTest.js
@@ -5,48 +5,73 @@ QUnit.module('SymptomVsSymptomChartDataProviderTest', function () {
         [
             [
                 {
-                    prrByLotX: {
+                    dict1: {
                         "lotX": 1.0
                     },
-                    prrByLotY: {
+                    dict2: {
                         "lotY": 2.0
                     }
                 },
                 {
-                    prrByLotX: {
+                    dict1: {
                     },
-                    prrByLotY: {
+                    dict2: {
                     }
                 }
             ],
             [
                 {
-                    prrByLotX: {
+                    dict1: {
                         "lotX": 1.0,
                         "lotCommon": 2.0
                     },
-                    prrByLotY: {
+                    dict2: {
                         "lotCommon": 3.0,
                         "lotY": 4.0
                     }
                 },
                 {
-                    prrByLotX: {
+                    dict1: {
                         "lotCommon": 2.0
                     },
-                    prrByLotY: {
+                    dict2: {
                         "lotCommon": 3.0
                     }
                 }
             ]
         ],
-        (assert, [dataSets, mergedDataSets]) => {
+        (assert, [dicts, dictsHavingCommonKeys]) => {
             // Given
 
             // When
-            const mergedDataSetsActual = SymptomVsSymptomChartDataProvider.retainCommonLots(dataSets);
+            const dictsHavingCommonKeysActual = SymptomVsSymptomChartDataProvider.retainCommonKeys(dicts);
 
             // Then
-            assert.deepEqual(mergedDataSetsActual, mergedDataSets);
+            assert.deepEqual(dictsHavingCommonKeysActual, dictsHavingCommonKeys);
         });
+
+    QUnit.test('shouldProvideChartData', function (assert) {
+        // Given
+        const prrByLotX = {
+            "lotX": 1.0,
+            "lotCommon": 2.0
+        };
+        const prrByLotY = {
+            "lotCommon": 3.0,
+            "lotY": 4.0
+        };
+
+        // When
+        const chartData = SymptomVsSymptomChartDataProvider.getChartData({ prrByLotX, prrByLotY });
+
+        // Then
+        assert.deepEqual(
+            chartData,
+            [
+                {
+                    x: 2.0,
+                    y: 3.0
+                }
+            ]);
+    });
 });
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