From: Jérôme Benoit <jerome.benoit@sap.com>
Date: Fri, 15 Sep 2023 20:08:51 +0000 (+0200)
Subject: refactor: cleanup standard deviation implementation
X-Git-Tag: v1.2.22~12
X-Git-Url: https://git.piment-noir.org/?a=commitdiff_plain;h=8f60746ca1192bfcab03d890016a4704703a701a;p=e-mobility-charging-stations-simulator.git

refactor: cleanup standard deviation implementation

Signed-off-by: Jérôme Benoit <jerome.benoit@sap.com>
---

diff --git a/src/utils/StatisticUtils.ts b/src/utils/StatisticUtils.ts
index ecd47a17..7f338ff9 100644
--- a/src/utils/StatisticUtils.ts
+++ b/src/utils/StatisticUtils.ts
@@ -68,9 +68,9 @@ export const stdDeviation = (
   dataSet: number[],
   dataSetAverage: number = average(dataSet),
 ): number => {
-  const geometricDeviation = dataSet.reduce((accumulator, nb) => {
-    const deviation = nb - dataSetAverage;
-    return accumulator + deviation * deviation;
-  }, 0);
-  return Math.sqrt(geometricDeviation / dataSet.length);
+  return Math.sqrt(
+    dataSet.reduce((accumulator, num) => {
+      return accumulator + Math.pow(num - dataSetAverage, 2);
+    }, 0) / dataSet.length,
+  );
 };